ES2607088T3 - Double layer nylon zipper - Google Patents

Abstract

A double layer nylon zipper, comprising: two zipper straps, each zipper tape (1) comprising a narrow and elongated textile band (11), two series of teeth (12, 12 ') located respectively on the upper sides and lower opposite of said narrow and elongated textile band, each of said series of teeth being formed by a series of spiral elements (121, 121 ') made of plastic, each of said spiral elements comprising a length greater than the diameter of said spiral elements, a spiral body (123, 123 ') connected to said spiral head and a filament groove (124) located in the body of said spiral, characterized by having a textile band (125) covering the spiral body of each spiral element of the series of teeth of the lower part of said narrow and elongated textile band, and a seam line (13) sewn into said narrow and elongated textile band (11) and said textile band ( 125) and extends over a part of said textile band corresponding to the groove of the filament (124) of the spiral body of each spiral element of the series of teeth of said narrow and elongated textile band (11) holding said two series of teeth and said textile band to said narrow and elongated textile band; and a zipper closure cursor (2) coupled between the series of crimped teeth of said two zipper bands, said closure cursor comprising an upper flap (21) and an opposite lower flap (23), a dividing wall (23) connected vertically between said upper flap and said lower flap, a bridge (24) located in the upper part of said upper flap, and a handle (25) coupled to said bridge, said upper flap and said lower flap comprising a first end (211 , 221) and a second end (212, 222) opposite, the first end of said upper flap and the first end of said lower flap being arranged level, said upper flap (21) being relatively longer than the lower flap (22 ) so that the second end of said upper fin protrudes above the second end of said lower fin, defining a housing space (26) just below the second end (212) of said upper fin (21) outside of The second end (222) of said lower fin (22).

Description

DESCRIPTION

Double layer nylon zipper.

The present invention relates to zip fasteners and more particularly to a double-layer nylon zipper, the use of which is practical in a suitcase, backpack or tent.

The most conventional nylon zippers have a single layer design. A single layer nylon zipper is not strong enough. Simply insert the tip of a pen or the sharp end of a rod between the two series of teeth crimped with a single layer nylon zipper to open the zipper easily. 10 Therefore, using a single layer nylon zipper in a suitcase or other similar item cannot effectively protect items stored against loss or theft. To solve this problem, double layer nylon zippers have been developed. For example, the Taiwanese patent with publication number M423469 describes a double layer zipper with tadpole-shaped teeth, and the Taiwanese patent with publication number 4.41257 describes a double layer nylon zipper, which has a series of crimping teeth 15 arranged on each of the opposite upper and lower sides of each zipper tape providing an anti-perforation function.

However, in conventional double layer zipper designs (such as US8132303, US7891061), the opposite upper and lower walls of the zipper closure cursor have the same length. 20 When a double-layer zipper is used in the corner of a suitcase or backpack, the difference in near angle between the two layers of crimped teeth means that the double-layer zipper cannot withstand the strong tension produced during the closure of the two layers of teeth crimped in the corner area, causing one layer of the crimped teeth to close and the other layer of crimped teeth to open.

 25

In addition, the series of crimping teeth of each tape of a double-layer nylon zipper is formed by a series of spiral elements to the left or right made from a plastic filament and attached to the narrow textile band and elongated of the respective zipper tape by a respective seam line. By moving the zipper closure cursor in relation to the zipper straps, the seam lines of the zipper straps remain in direct contact with the zipper closure cursor. Friction 30 between the upper and lower seam lines of the zipper straps and the closing cursor can damage the seam lines, shortening the life of the zipper. Therefore, conventional zippers have numerous disadvantages.

With the present invention the objects have been achieved taking into account said circumstances. A main object 35 of the present invention is to provide a double layer nylon zipper, which improves the positive coupling between the set of crimping teeth and the zipper cursor, facilitates the uniform operation of the zipper closure cursor over a corner curved, and avoids the problem that the zipper snaps or that the teeth are damaged as commonly observed in prior art designs. Thus, the use of the double layer nylon zipper is practical in a suitcase, backpack or similar items.

Another object of the present invention is to provide a double layer nylon zipper, which avoids direct contact between the seam lines and the closing cursor, eliminating the problem of wear of the seam line observed in the prior art designs. and avoiding damage to the seam line. Four. Five

To achieve these and other objects of the present invention, a double layer nylon zipper comprises two zipper straps and a zipper cursor. Each zipper tape comprises a narrow and elongated textile band, two series of teeth located respectively on the opposite upper and lower sides of the narrow and elongated textile band, each series of teeth being formed by a series of spiral elements made of material. plastic, each spiral element comprising a spiral head and a spiral body, wherein the spiral head has a width greater than the diameter of the spiral elements, a spiral body connected to the spiral head and a groove of the filament located in the spiral body, a textile band covering the spiral body of each element of the series of teeth of the narrow and elongated textile band, and a sewing line sewn to the narrow and elongated textile band and the textile band and extending over a part of the textile band 55 corresponding to the groove of the spiral body filament of each spiral element of the series of teeth if tucked on the lower side of the narrow and elongated textile band to fasten the two series of teeth and the textile band to the narrow and elongated textile band. The zipper closure cursor engages between the series of crimping teeth of the two zipper straps, and comprises an opposite upper flap and lower flap, a dividing wall connected vertically between the upper flap and the lower flap, a bridge located on the upper side 60 of the upper flap, and a handle attached to the bridge. The upper and lower fins each comprise a first opposite end and a second end. The first end of the upper fin and the first end of the lower fin are held level. The upper fin is relatively longer than the lower fin so that the second end of the upper fin protrudes above the second end of the lower fin, defining a housing space just below the second end of the upper fin outside the second 65

end of the lower fin to facilitate uniform crimping of the set of crimping teeth and to prevent the teeth of the zipper from snagging or being damaged.

In addition, the upper flap comprises two protective projections that extend downwards respectively from two opposite sides towards the lower fin. In addition, each protective projection extending downwards 5 comprises a chamfered edge that ends at the second end of the upper fin. The lower fin comprises two protective projections that extend upwards respectively extending from opposite sides towards the upper fin. In addition, each upper protective shoulder comprises a chamfered edge that ends at the second end of the lower fin. Pulling the zip closure cursor at a corner angle of, for example, a suitcase, the design of the housing space and the chamfered edge of each protective shoulder 10 upward of the lower flap effectively prevents interference between the cursor and the series of crimping teeth, thus facilitating uniform crimping of the crimping teeth series and preventing the teeth of the rack from being hooked or damaged.

In addition, each spiral element of the set of crimping teeth of each zipper tape comprises a groove of the filament located in the spiral body to receive the seam line that holds the respective series of crimping teeth to the respective textile web. narrow and elongated. The design of the filament groove prevents direct contact between the seam lines and the cursor and additional damage to the seam line. In addition, the seam line of each zipper tape sinks into the respective textile band corresponding to the groove of the spiral body filament of each spiral element of the series of teeth of the lower side of the associated narrow and elongated textile band 20 , avoiding direct contact with the zipper cursor. In addition, the position of the textile band helps to quickly recognize the front and back side of the double layer nylon zipper during sewing of the article.

FIG. 1 is an exploded view of a double layer nylon zipper according to the present invention. 25

FIG. 2 is an elevated view of a zipper closure cursor of a double layer nylon zipper according to the present invention.

FIG. 3 corresponds to a view from another angle of FIG. 2. 30

FIG. 4 is a side view of the double layer nylon zipper zipper closure cursor in accordance with the present invention.

FIG. 5 is a top view of the double layer nylon zipper zipper closure cursor 35 in accordance with the present invention.

FIG. 6 is a front view of a part of the double layer nylon zipper in accordance with the present invention.

 40

FIG. 7 is a schematic cross-sectional view of the double layer nylon zipper according to the present invention.

FIG. 8 is a rear side view of a part of the double layer nylon zipper in accordance with the present invention. Four. Five

FIG. 9 is a schematic cross-sectional view of the double layer nylon zipper zipper tapes in accordance with the present invention.

FIG. 10 is a schematic drawing of the present invention, illustrating the zipper closure cursor 50 moving relative to the zipper straps.

FIG. 11 is an applied schematic view of the present invention, illustrating the double layer nylon zipper used in a suitcase.

 55

FIG. 12 is an elevated oblique view of an alternative form of the zipper closure cursor in accordance with the present invention.

FIG. 13 is a side view of the zipper closure cursor shown in FIG. 12.

 60

As shown in FIG. 1, a double layer nylon zipper according to the present invention comprises two zipper straps 1, and a zipper closure cursor 2.

Referring to FIG. 6 and 7 and, again, to FIG. 1 each zipper tape 1 comprises a narrow and elongated textile band 11, two sets of crimping teeth 12,12 'located opposite on the upper and lower side 65, respectively, of the narrow and elongated textile band 11, and a sewing line 13, which holds the series of

12,12 'crimping teeth to the narrow and elongated textile band 11. In addition, the narrow and elongated textile band 11 is a nylon fabric band.

Referring to FIG. 6-9, the series of crimping teeth 12,12 'are formed respectively from a series of spiral elements to the left or right 121,121' made of plastic filament. Each spiral element 5 121,121 'of the set of crimping teeth 12,12' comprises a spiral head 122,122 ', and a spiral body 123,123' sewn to the narrow and elongated textile band 11. As shown in the FIG. 6 and in FIG. 7, the spiral body 123,123 'defines a filament groove 124 that receives the respective seam line 13. As shown in FIG. 8 and in FIG. 9, a textile band 125 is covered on the spiral body 123 'of each spiral element 121' of the series of crimping teeth 12 'located on the lower side of the narrow and elongated textile band 10 11. The seam line 13 extends over the groove of the filament 124 of the spiral body 123 of each spiral element 121 of the upper side of the narrow and elongated textile band 11 and of each spiral element 121 'and the textile band 125 of the lower side of the band narrow and elongated textile 11, firmly holding the respective series of teeth 12,12 'to the upper side and the lower side of the narrow and elongated textile band 11.

 fifteen

Referring to FIG. 2-5, the zipper closure cursor 2 is coupled between the two zipper straps 1, and comprises an upper flap 21 and a lower flap 22 opposite each other, a dividing wall 23 connected vertically between the upper flap 21 and the flap bottom 22, a bridge 24 disposed on the upper side of the upper flap 21, and a handle 25 coupled to the bridge 24. The upper flap 21 and the lower flap 22 each comprise a first end 211, 221 and a second end 212, 222 opposite. The first end 211 of the upper fin 20 and the first end 221 of the lower fin 22 are arranged level. The dividing wall 23 is connected vertically between the first end 211 of the upper fin 21 and the first end 221 of the lower fin 22 through the center. The upper flap 21 is relatively longer than the lower flap 22 so that the second end 212 of the upper flap 21 protrudes above the second end 222 of the lower flap 22, defining a housing space 26 just below the second end 212 of the upper fin 21 on the outside 25 of the second end 222 of the lower fin 22. As shown in FIG. 4, the tangent line A towards the second end 212 of the upper fin 21 extending towards the lower part of the second end 222 of the lower fin 22 defines with the vertical line B an angle θ contained of 20 ° ~ 30 °, of so that the optimal accommodation space 26 can be defined. In addition, the upper flap 21 comprises two protective projections that extend downwardly 213 that respectively extend downward from the two opposite sides thereof to the lower flap 22. Both protective projections that extend downwardly 213 have a chamfered edge. 214 ending at the second end 212 of the upper flap 21. Furthermore, the lower flap 22 comprises two protective projections that extend upwardly 223 respectively extending upward from the two opposite side sides thereof toward the upper flap 21 Both protective projections extending upward 223 have a chamfered edge 224 ending at the second end 222 of the lower fin 22. 35

The two zipper straps 1 and the zipper closure cursor 2 are mounted forming a double layer nylon zipper, as shown in FIG. 1. This double layer nylon zipper design can be used in a suitcase 10, backpack, or other similar items, to protect objects transported against loss or theft. According to the arrangement of the set of crimping teeth 12 of the opposite upper and lower side of the narrow and elongated textile band 11 of each of the two zipper tapes 1, the double layer nylon zipper provides excellent anti-perforation function.

Referring to FIG. 2-5, the zipper closure cursor 2 further comprises one or multiple lugs with eyelets 27 located on the upper side of the upper flap 21 to pass a padlock (not shown) to lock the zipper closure cursor 2 with a key by a predetermined part of the suitcase or backpack in which the double layer nylon zipper is used, preventing any unauthorized person from opening the double layer nylon zipper.

Referring to FIG. 6 and 7 and FIG. 1 again, in order to avoid friction between the sewing lines 13 that 50 hold the respective set of crimping teeth 12,12 'to the narrow and elongated textile band 11 of the respective zipper straps 1 and the closing cursor 2, each spiral element 121 of the set of crimping teeth 12 of the upper side of each zipper tape 1 defines a filament groove 124 in the body of the spiral 123 where the respective seam line 13 is received. By respectively extending the lines of seam 13 on the grooves of the filament 124 the spiral bodies 123 of the spiral elements 121 of the respective series of 55 teeth 12 of the upper side of the respective zipper tape 1 to hold the respective series of teeth 12,12 'a the respective narrow and elongated textile band 11, the zipper closure cursor 2 will not touch the seam lines 13 during its movement to close / open the double layer nylon zipper, avoiding damage to the to sewing line. In addition, as shown in FIG. 8 and FIG. 9, the textile band 125 is covered on the spiral body 123 'of each spiral element 121' of the set of crimping teeth 12 'of the lower side of the narrow and elongated textile band 60 of each zipper tape 1 By sewing the seam line 13 to fasten the textile band 125 to the narrow and elongated textile band 11 of the respective zipper tape 1, the seam line 13 can sink into the textile band 125, avoiding direct contact between the line sewing 13 and the zipper closure cursor 2. In addition, the position of the textile band 125 helps to quickly recognize the front and rear sides of the double layer nylon zipper. 65

Referring to FIG. 10 and 11, the double layer nylon zipper can be installed in a suitcase 10 or backpack. By pulling the closing cursor 2 over a corner of the suitcase 10 or backpack, the design of the accommodation space 26 and the chamfered edge 224 of each upwardly extending protective shoulder 223 of the lower flap 22 effectively prevents interference between the Zipper closure cursor 2 and the set of crimping teeth 12, thus facilitating uniform crimping of the set of crimping teeth 12 and preventing the teeth of the rack from snagging or being damaged.

FIG. 12 and 13 illustrate an alternative form of the closing cursor 2. According to this alternative form, the closing cursor 2 comprises an upper flap 21 and a lower flap 22 opposite, a dividing wall 23 connected vertically between the upper flap 21 and the lower flap 22, two bridges 24 protruding respectively from the upper flap 10 21 and the lower fin 22, and two handles 25 respectively coupled to the bridges 24. A double layer nylon zipper using this alternative form of closing cursor 2 of according to the present invention it is useful for use in a store. In this way, a user can pull the closing cursor of the double layer nylon zipper both from inside and outside the store.

 fifteen

Although a particular embodiment of the invention has been described in detail by way of illustration, various modifications and improvements can be applied without departing from the scope thereof, as defined in the appended claims. Therefore, the invention is not limited except by the appended claims.

Claims (8)

1. A double layer nylon zipper, comprising: two zipper ribbons, each zipper tape (1) comprising a narrow and elongated textile band (11), two 5 sets of teeth (12, 12 ') located respectively on the opposite upper and lower sides of said narrow and elongated textile band , each of said series of teeth being formed by a series of spiral elements (121, 121 ') made of plastic, each of said spiral elements comprising a length greater than the diameter of said spiral elements, a spiral body (123, 123 ') connected to said spiral head and a filament groove (124) located in the body of said spiral, characterized by having a textile band 10 (125) covering the spiral body of each spiral element of the series of teeth of the lower part of said narrow and elongated textile band, and a seam line (13) sewn into said narrow and elongated textile band (11) and said textile band (125) and extends over a portion of said band you xtile corresponding to the groove of the filament (124) of the spiral body of each spiral element of the series of teeth of said narrow and elongated textile band (11) holding said two series of teeth and said textile band to said narrow textile band and 15 elongated; and a zipper closure cursor (2) coupled between the series of crimped teeth of said two zipper ribbons, said closure cursor comprising an upper flap (21) and an opposite lower flap (23), a dividing wall (23) connected vertically between said upper flap and said lower flap, a bridge (24) located in the upper part of said upper flap, and a handle (25) coupled to said bridge, said upper flap and said lower flap comprising a first end (211 , 221) and a second end (212, 222) opposite, the first end of said upper flap and the first end of said lower flap being arranged level, said upper flap (21) being relatively longer than the lower flap ( 22) so that the second end of said upper fin protrudes above the second end of said lower fin, defining a housing space (26) just below the second end (212) of said upper fin (21) by force a of the second end (222) of said lower fin (22). 25 2. The double layer nylon zipper according to claim 1, wherein a tangent line (A) to the second end (212) of said upper flap extending towards the second end (222) of said lower flap defines with a line vertical (B) with respect to the upper fin and the lower fin an angle θ contained in the range of 20 ° to 30 ° 30 3. The double layer nylon zipper according to claim 1 or 2, wherein said upper flap (21) comprises two protective projections extending downwards (213) that respectively extend downward from the two opposite sides thereof. towards said lower fin (22).  35 4. The double layer nylon zipper according to claim 3, wherein each of said protective projections extending downward (213) comprise a chamfered edge (214) ending at the second end (212) of said upper flap (twenty-one). 5. The double layer nylon zipper according to any one of claims 1 to 4, wherein said lower flap 40 (22) comprises two protective projections that extend upward (223) that respectively extend upward from the two opposite sides thereof towards said upper fin (21). 6. The double layer nylon zipper according to claim 5, wherein each of said protective projections extending upwards (223) comprises a chamfered edge (224) ending at the second end 45 (222) of said fin lower (22). 7. The double layer nylon zipper according to any one of claims 1 to 6, wherein said closing cursor (2) further comprises at least one eyelet with eyelet (27) located on said upper flap (21) for closing the zipper With a padlock. fifty 8. The double layer nylon zipper according to any one of claims 1 to 7, wherein the seam line (13) of each of said zipper straps (1) sinks into the respective textile band (125) in correspondence with the filament groove (124) of the spiral body of each spiral element of the series of teeth of the lower part of the associated narrow and elongated textile band (11). 55