FI80371C - BLIXTLAOSENHET. - Google Patents

Description

1 80371

zipper assembly

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a zipper assembly according to the type definition of claim 1, having a mesh connection structure for use in joining together two opposite edges of a network structure (U.S. Class 24-205.16C).

10 Prior Art

A typical example of a network connection structure of this type is disclosed in U.S. Patent 4,056,868, issued November 8, 1977. This known structure comprises two warp-knitted mesh fasteners, each having 15 mesh transition areas adapted to be connected to the mesh structure at one of the opposite edges, and two splicing areas located on a common side of the mesh transition area and together supporting one zipper clutch strip. The mesh transition region comprises a loop structure with a plurality of diamond-shaped meshes. The loop structure comprises areas of meshes of different sizes, arranged so that the area of the smallest meshes connects the second said joining area and the area of the largest meshes is for joining the edge of the net area. The region of the joint 25 is formed of loops of the mesh transition region extending therethrough, and a weft yarn is arranged inside the loops to secure them together. Each clutch strip is fitted between the joint areas and sewn into them with sewing stitches.

The mesh connection structure thus arranged has been found to be unsatisfactory because the zipper clutch strips tend to become wavy, wrinkled or otherwise deform due to the diamond-shaped meshes deforming or deforming when a strong lateral pull is applied to the mesh structure. The deformed clutch strips thus prevent the sliding movement of the slider along the rows of clutch members which are attached to opposite edges of the clutch strips and cause the rows of clutch members to be spaced apart. In addition, sewing stitches that run on and across the joints are at risk of wear or sometimes breakage in abrasive contact with a hard foreign object. This known fastener with such a mesh structure is not suitable for continuous manufacture on a warp knitting machine.

SUMMARY OF THE INVENTION

The zipper assembly has a mesh connection structure with two warp knitted fasteners, each having a plurality of rectangular meshes defined by a plurality of thick rows of loops and a plurality of weft yarns. Each bracket includes a mesh transition region having first, second and third longitudinal portions of different mesh sizes associated with each other. The first part is reinforced with a core wire for a secure connection to the other opposite edge of the network structure. Each of the second parts receives and distributes the lateral pull evenly over the entire length of the zipper clutch straps supported by the connecting area of the brackets. Each of the third portions interposed between the first and second portions has the largest rectangular meshes that allow the bonding wire to pass evenly through them to connect the edge of the first portion and the mesh structure. Each connection area has at least one longitudinal groove which opens - away from the main plane of the coupling strip and always receives at least one row of sewing stitches, which protects them from damage. The plant areas have the smallest rectangular meshes so that the clutch strip can be sewn firmly into them.

It is an object of the present invention to provide a zipper assembly comprising two warp-knit fasteners having a structure strong enough to withstand the large external stresses applied to them in either the longitudinal or transverse direction without deforming or otherwise damaging the clutch straps attached to the fasteners. The feature of the invention is set out in claim 1.

Another object of the present invention is to provide a zipper assembly with a fastener which can be connected to the second opposite edge of the net structure very easily.

It is a further object of the present invention to provide a zipper assembly having warp knitted fasteners that can be knitted to a continuous length by warp knitting.

Yet another object of the present invention is to provide a zipper assembly comprising a zipper having two clutch straps sewn to two fasteners by rows of sewing stitches that are protected from damage.

Many other advantages, features, and additional objects of the present invention will become apparent from the following description and the accompanying drawings, in which some preferred embodiments of the principles of the present invention are illustrated by way of example. BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 shows a top view of a part of a set of zippers according to the present invention, Fig. 2 schematically shows a cross-section taken along the line II-II in Fig. 1, Fig. 3 shows an enlarged part of Fig. 1 extended or unbent, Fig. 4 shows Fig. 3 along the line IV-IV Fig. 5 shows a point diagram of the warp knitted net-30 fastener of Fig. 3, Fig. 6 shows a point diagram of the overlaps of the yarns forming the warp-knitted fastener of Fig. 5, Fig. 7 shows an enlarged perspective view of a part of the zipper half attached to the edge of the net structure, Fig. 8 shows Fig. 9 shows a cross-section taken along the line IX-IX in Fig. 8, Fig. 10 shows a dot diagram of a warp knitted net fastener, Fig. 11 shows a warp knitted net according to another embodiment of Fig. 3, respectively. fastener, Fig. 12 is a cross-sectional view taken along line XII-XII of Fig. 11, and Fig. 13 is a plan view of a zipper assembly according to another embodiment of the present invention.

DETAILED DESCRIPTION OF SOME PREFERRED EMBODIMENTS

As shown in Figure 1, the zipper assembly for joining the two opposite edges of the mesh structure 15 comprises two warp-knitted mesh fasteners 18, 18 (hereinafter referred to as fasteners) having a plurality of rectangular openings or meshes. Each bracket 18, 18 comprises a net transition area 19 adapted to be connected to the other opposite edge of the net structure and two overlapping connection areas 20, 20 connected to the longitudinal edge of the net transition area 19 and connected together support a second clutch member strip 21 of the zipper. the mesh structure 17 with 25 of the opposite edges is shown in Figure 7.

According to Figure 1, the net transition area 19 has a first part 23 (not including a core wire 46) which extends along an edge opposite to the zipper clutch strip 21. The mesh transition area 19 is bent around and shown in Figure 3 as unbent, the first part 23 being in the middle. In addition, the region 19 includes two second portions 24, 24 extending adjacent the joint regions 20, 20 and two third portions, 25, 25 extending between the first portion 23 and the second portions 24, 24, respectively. The mesh size of the third 25 portions 25, 25 is larger than the mesh size of the first portion and the second portions 23, 24, 24. In the first part and in the second parts 23, 24, 24 the eyes are substantially equal. The mesh transition region 19 is formed by 5 80371 of a plurality of rows of loops 26-31 extending in its longitudinal direction and a plurality of weft yarns 32 having, as described below in connection with Figure 5, longitudinal portions extending in the direction of loop rows 26-31 and transverse portions extending in pairs perpendicularly. against and between loop rows 26-31, jointly defining meshes of the above size. The joining areas 20, 20 are formed by a plurality of rows of loops 33-36 running longitudinally parallel to the silo mating rows 26-31, and a plurality of weft yarns 37 which together define meshes much smaller than the meshes of the mesh transition area 19. The weft yarns 37 are thinner than the weft yarns 32.

According to Fig. 5, the loop rows 15 26-31 of the mesh transition region 19 include warp yarns L1 knitted in pairs as warp loops and longitudinal portions of a plurality of embedded weft yarns L2-L5 knitted with warp loops L1. The transverse portions of the respective fitted weft piles L2-L5 run in pairs between the rows 26-31 of the loop-20 and together form the weft yarns 32 of the transition region 19. The loop rows 33-35 of the joining regions 20, 20 also include warp yarns L1 knitted in pairs as warp loops, and several longitudinal portions of the inserted weft yarns L8, L9 knitted with warp loops Li 25. The weft yarns 37 of the joint areas 20, 20 are formed by transverse portions of the fitted weft yarns L8, L9, respectively. Although not shown in Fig. 5, a plurality of yarns L6, only one of which is shown in Fig. 6, are arranged in the warp direction in the rows 27-31, 33-36 of the loop-30, and a plurality of warp yarns L7, only one of which is shown in Fig. 6, are also arranged. in the direction of the warps to the rows of loops 26-30, 33-36. The yarns L6, L7 have patterns that are symmetrical to each other, as shown in Fig. 6, where they co-operate with the respective pairs of warp yarns L1 26-31, 33-36 of the loops.

According to Figure 6, the yarns L1 to L9 have the following corresponding patterns.

6 80371

Yarn Model LI O - 1/1 - O.

L2 = 5 - 5/3 - 3/5 - 5/3 - 3/5 - 5/3 - 3/5 - 5/0 - 0/2 - 2/0 - 0/2 - 2/0 - 0 / 2 - 2/0 - 0.

5 L3 = O - 0/2 - 2/0 - 0/2 - 2/0 - 0/2 - 2/0 - 0/5 - 5/3 - 3/5 - 5/3 - 3/5 - 5 / 3 - 3/5 - 5.

L4 = 8 - 8/6 - 6/8 - 8/6 - 6/8 - 8/6 - 6/8 - 8/8 - 8/6 - 6/8 - 8/6 - 6/8 - 8 / 6 - 6/8 - 8/0 - 0/2 - 2/0 - 0/2 - 2/0 - 0/2 - 2/0 - 0/0 - 0/2 - 2/0 - 10 0/2 - 2/0 - 0/2 - 2/0 - O.

L5 = O - 0/2 - 2/0 - 0/2 - 2/0 - 0/2 - 2/0 - 0/0 - 0/2 - 2/0 - 0/2 - 2/0 - 0 / 2 - 2/0 - 0/8 - 8/6 - 6/8 - 8/6 - 6/8 - 8/6 - 6/8 - 8/8 - 8/6 - 6/8 - 8/6 - 6/8 - 8/6 - 6/8 - 8.

15 L6 = 2 - 2/0 - 0/2 - 2/0 - 0/2 - 2/0 - 0/2 - 2.

L7 = O - 0/2 - 2/0 - 0/2 - 2/0 - 0/2 - 2/0 - 0.

L8, L9 = 2 - 2/0 - O.

As best shown in Figure 4, the rows of loops 26-31, 33-36 in the fastener 18 thus knitted 20 are thicker than the weft yarns 32, 37, so that two longitudinal grooves 38, 38 are formed between each adjacent pair of rows of loops 26-31, 33-36. on opposite sides of the bracket 18. The yarns L1, L6, L7 can be polyester-multifilament yarns and the yarns L2, L3, L4, L5, L8 can be twisted yarns made of polyester. Each wire L9 acts as a bonding wire to connect two adjacent fasteners 18 along their opposite edges, thereby providing a plurality of laterally connected fasteners 30 simultaneously. The binder yarns L9 are preferably made of water-soluble synthetic resin fibers, so that the fasteners 18 can be separated by immersion in water after knitting.

The fastener 18 can be easily made by warp knitting, which can be cut into pieces of the desired length with a hot cutting blade or other suitable cutting devices (not shown). The truncated ends of the fasteners are prevented from sagging by fusing together the ends of the synthetic resin mesh. When the rows of loops 26-31, 33-36 are formed of 11 7 80371 warp yarns L1 knitted in pairs as warp loops and longitudinal portions of the embedded weft yarns L2-L5, L8, L9 knitted with warp loops, the fastener 18 can be made strong and rigid structure-5 tea.

The fasteners 18, 18 are then attached to the various clutch strips 21, 21 of the zipper 22 to provide the zipper assembly shown in Figures 1 and 2. To provide the attachment, each fastener 18 is bent around the first portion 23 of the mesh transition region 10 19 with a reinforcing core wire 46 firmly retained by the loop rows 28, 29 of the first portion 23 therebetween. Each coupling strip 21 is interposed between the connecting areas 20, 20 of the bracket 18 and then sewn into them with two rows of sewing stitches 44a, 15 44b, for example lock stitch stitches or double chain stitches, each row of sewing stitches running in one longitudinal groove 38 without . In order to increase the binding strength of the sewing stitches 44a, 44b and to distribute such increased binding strength to the entire joint areas 20, 20, the sewing stitches are formed by forcing two sewing threads (not shown) through groove-25 sa 38. The rows of loops 26, 31, 33-36 act as close pairs to prevent the stitches 44a, 44b from moving outside the grooves 38 and from being worn or damaged when in contact with hard foreign objects such as stones or the like. The rows of loops 26, 31, 33-36 also function to cause the clutch straps 21, 21 to engage firmly in place. The sewing stitches 44a, 44b in at least each groove 38 are covered with a layer of synthetic resin 45, and more preferably the groove 38 is filled with a layer of synthetic resin 45, as shown in Figure 2. With this arrangement 35, the is completely blocked.

The zipper 22 shown in Figure 1 has two rows of coupling members 39, 39 mounted on two opposite edges of the coupling strips 21, 21 along them. Two top end stops 40, 41 are mounted at the top end of the zipper 22 adjacent to the top pair of clutch members 39, 39. In addition, the zipper 22 5 has a lower end stop 42 mounted at its lower end transversely across the opposite edges of the clutch strips 21, 21. The slider 43 is slidably mounted on rows of coupling members 39, 39 to engage them with each other to close the zipper 22 and 10 apart to open the zipper in a known manner.

According to Figure 7, each fastener 18 of the zipper assembly 15 is attached to the other opposite edge of the net structure 17, i.e. to the outermost yarns 16 by a tie rope 15 or braid 47. The tie braid 47 passes through the eyelets of the third part 25 of the fastener and the longitudinal edge eyelets 28 of the fastener. 46 and over and around the outermost wires 16 of the mesh structure. The third parts 25, 20 with the largest mesh size allow the binding braid to pass through very easily with the result that a simple and fast joining is achieved.

With the zipper assembly 15 thus constructed, the zipper 22 can be protected against deformation or damage under the influence of strong external stresses, because such stresses when applied to the net structure 17 in the transverse direction of the fasteners 18, 18 are received and evenly distributed over the entire length of the zipper coupling strips 21, 21. a transmission 30, 19 of the mesh transition region having rectangular meshes of various sizes defined by thick rows of loops 26-31 and pairs of weft yarns 32. The rows of loops 33-36 have sufficient strength to withstand the large external stresses applied to the fasteners 18, 18 in their longitudinal direction. In addition, the joint areas 20, 20, in which 35 are the smallest meshes and which are made tight, allow the coupling strips 21, 21 to be sewn firmly and precisely into them. The first part 23 of the fastener, with thick rows of loops 28, 29 and a reinforcing core wire 46 interposed between the warp yarns 28, 29, provides a secure connection to the edge 16 of the mesh structure 17 during a long period of use.

Figures 8 and 9 show a modified bracket 50 comprising a mesh transition area 51 and two connecting areas 52, 52, 5 located on opposite sides of the transition area 51. The bracket 50 is substantially similar to the bracket 18 of the previous embodiment, except that the mesh transition region 51 includes two second portions 53, 53, each having two parallel rows of rectangular meshes 10 of the same size. Each of the second portions 53 includes three rows of loops 54, 55, 56 and 57, 58, 59 extending longitudinally of the portions, and a plurality of weft yarns 60 having longitudinal rows of loops 54-56, 57-59 and transverse portions as described below in connection with Figure 10, passing in pairs perpendicularly against and between rows of loops 54-56, 57-59, defining rectangular meshes together therebetween. As shown in Fig. 10, the bracket 50 is formed of a plurality of yarns L1-L8, each having the same pattern as each of the respective yarns L1-L8 shown in Fig. 6. Each central row of loops 55, 58 comprises two yarns L1 knitted as warp loops and longitudinal portions of yarns L2, L3 arranged in the direction of the weft yarns in the warp loops L1. The weft yarns 60 comprise transverse portions of the embedded weft yarns L2, L3 which run in pairs between the loop grooves 54-59. The yarns L6, L7 are arranged in the warp direction loop rows 55, 58 to tightly tie the yarns L1, LI of the loop rows. The rows of loops 54, 56, 57, 59 are structurally similar to the corresponding rows of loops 26, 27, 30, 31 shown in Fig. 5. The bracket 50 is attached to one opposite edge of the net structure (not shown) after connecting the zipper switch. with an organ strip and a reinforcing core wire in the same manner as described in connection with the previous embodiment. In addition, the fastener 50 thus arranged is advantageous because the lateral pull applied to the net structure is received more efficiently and distributed more completely through the second parts 53, 53 than in the case of the fastener 18 of the fastener 18.

The fastener shown in Figures 11 and 12 has a mesh transition area 62 and two connecting areas 63, 63. The first portion 64 of the mesh transition area 62 has two rows of loops 66, 5 67 between which reinforcing core yarn 65 passes. Unlike the previous embodiments, the core yarn 65 is retained by two weft yarns 68 and between which run transversely between the rows of loops 66, 67 at longitudinal intervals. Such an arrangement is accomplished by knitting the core yarn 10 into the first portion 64 of the fastener 61 while knitting the fastener. The fastener 61, in which the core yarn 64 is knitted, can be attached to the net structure (not shown) very easily.

Figure 13 shows a traction chain assembly 70 according to another embodiment, comprising two fasteners 71, 71, each having a mesh transition region 72 and two groups of loop rows 73, 73 disposed at the edge of the mesh transition regions 72. The zipper 74 includes two clutch strips 75, 75 attached to the fasteners 71, 71 20 by a series of sewing stitches 76 interposed between each pair of rows of loops 73, 73. The zipper 74 has two rows of coupling members 77, 77 mounted on respective coupling strips 75, 75 along their opposite edges and a detachable lower end stop 78 so that the coupling strips 75, 25 75 can be completely separated when the slider (not shown) is placed in the lowest position next to the detachable lower terminal stop. The two core wires 79, 79 reinforce respective network transition areas 72, 72 arranged to join two opposite edges of the network structure (not shown).

Although various minor modifications may be proposed by one skilled in the art, it is to be understood that they fall within the scope of the patent within the scope of the following claims.

Il

Claims (14)

A zipper assembly for additionally joining two opposing edges to a mesh structure, which unit comprises a zipper (22; 74), with two coupling member straps (21, 21; 75, 75) and two strap-fitted mesh brackets (18, 18; 50; 61; 71) having multiple eyes and to each of which a mesh transition area (19; 51; 62; 72) arranged to be joined to another mesh structure (17) at opposite edges (16) and two to each other located joint regions (20, 20; 52, 52; 63, 63; 73, 73) which are joined to the longitudinal edge of the network transition area and which together support a coupling member band, the network transition region having a first part (23; 64) arranged further away from the longitudinal edge, two second portions (24) running adjacent the seam areas, and two third portions (25) running between the first and second portions, and the seam portions' eye size being smaller than the eye size of the first, second and the third portions, characterized in that the eyes at the gutter-fitted mesh brackets (18, 18; 50; 61; 71) in their shape are rectangular in that the sides of the rectangle are either parallel to the direction of the closure organ line or perpendicular relative thereto, and that the parallel sides are ribbed eyelids and the perpendicular sides of the impact tree trays, and that of the eye sizes. the third portions (25) are larger than the eye size of the first portions (23; 64) and the second portions (24). 30 Unit according to claim 1, characterized in that the first part (64) has a reinforcing core tree (65) running longitudinally. 11 35 is 80371 Unit according to claim 1, characterized in that each second part (53) experiences two parallel rows of rectangular eyes, which are the same size. 4. A unit according to claim 1, characterized in that each of the brackets has a plurality of seams (26-31, 33-36; 54-59; 66, 67J and several weft strands (L2, L3, L4, L5) which are connected together with the seams). -the sons and together define between them rectangular eyes, each rendering stitch having several rendering threads (L1, L6, L7). 5. A unit according to claim 4, characterized in that each runner seam comprises two runner strings, which are sewn as runner eyes (L1), and that each stride line (L2-L5) has longitudinal portions in said runner eyes and along them. . 6. A unit according to claim 5, characterized in that each runner stitch additionally has two runner strands (L6, L7) which are arranged in the direction of the runner strings as symmetrical models in said runner eyes (Li) and bind them tightly together. Unit according to claim 4, characterized in that the weft strands (32, 37; 60; 68) have longitudinal portions running in the longitudinal direction of the gutter seams (26-31, 33-36; 54-56; 66, 67). transverse portions, which run in pairs at right angles to the gutter seams (26-31, 33-36; 54-56; 66, 67) and between them. 8. A unit according to claim 4, characterized in that the runner threads (L1, L6, L7) are polyester filament threads and the weft threads are twisted polyester threads. 1Λ 80371 Ιο Unit according to claim 1, characterized in that each joint area (20, 20) exhibits at least one danger (38) which runs in the longitudinal direction of the joint and opens in the direction away from the main plane of the coupling organ band (21), whereby the coupling organ band is sewn. at the joint areas with at least one sufficient stitch (44a, 44b) running in the fire along it. Unit according to claim 9, characterized in that the row of stitches (44a, 44b) has been covered with a layer of synthetic resin (45) which extends into the fireplace (38) and runs along it. 11. A unit according to claim 9, characterized in that the fir (38) is filled with a layer of artificial resin (45). 12. A unit according to claim 9, characterized in that two rows of double chain stitches (44a, 44b) extend as symmetrical models into which the nil tread at one row stitch (44a) and the loop thread at the other row stitch. (64b) is in the fir. Unit according to claim 2, characterized in that the reinforcing core thread (35) is sewn into the first part (64). II