JPS6227141Y2 - - Google Patents

Description

[Detailed description of the invention] This invention mainly uses thermoplastic synthetic resin.
This invention relates to an improvement of a slide fastener stringer in which fastener elements formed in a series of connected shapes are sewn and fixed to a fastener tape.

Conventionally, as shown in Japanese Patent Application Laid-Open No. 54-159040, the upper and lower legs of adjacent fastener elements are connected to each other by a warp knitted strip knitted in a ladder shape, and There is a slide fastener stringer in which a fastener element is sewn and fixed to a fastener tape by a sewing thread passing between the wale groups on both sides of a stockinette strip, but there is a slide fastener stringer in which a fastener element is sewn and fixed to a fastener tape by a sewing thread passing through the middle of a group of wales on both sides of a stockinette strip. Because the sewing thread lacks integrity with the sewing thread structure,
When lateral attraction is applied to the slide fastener,
There is a drawback that the fastener element tends to shift laterally in the width direction of the fastener tape, and warp knitted strips appear between the legs of the fastener element in parallel with the sewing thread, which spoils the appearance.

In view of the current situation, in the present invention, the fastener element is firmly fixed to the fastener tape by a sewing thread, without causing pitch shift of the fastener element, lateral shift when lateral attraction force is applied, and the like. An object of the present invention is to provide a slide fastener stringer which has a good appearance because the connecting threads between the threads are covered by a sewing thread structure, and has smooth engagement and disengagement characteristics of fastener elements as a slide fastener.

The configuration of the illustrated example will be explained below.

As shown in FIGS. 1 and 2, the slide fastener stringer 1 according to the present invention has a fastener tape 7 in the gap between the inner surfaces 5 and 6 of the upper leg portion 3 and lower leg portion 4 of the fastener element 2. After being inserted, the fastener element 2 and the fastener tape 7 are sewn and fixed together with a sewing thread 8.

The illustrated fastener element 2 is connected in series with adjacent fastener elements 9, 10, etc. by connecting legs 11, 12 and connecting threads 13, 14 formed at the ends of the upper and lower legs 3, 4. There is.

Note that the rows of fastener elements 15 shown in FIGS. 1 and 2 have a symmetrical structure with the rows of fastener elements 2, 9, and 10.
Hereinafter, the third row showing the fastener element 15 will be described.
The structure will be explained based on the figure.

In FIG. 3, adjacent fastener elements 15, 16, 17, 18... are connected to upper leg portions 19, 2.
0, 21, 22... are connected by connecting legs 23, 24, respectively, and lower leg parts 25, 26,
By connecting two adjacent pieces 27, 28... with connecting legs 29, 30, 31..., respectively, the fastener elements formed in an inverted U shape are connected in a zig-jig shape at the ends of each of the upper and lower legs. It is said to be a structure.

The aforementioned upper leg portions 19 to 22..., lower leg portions 25 to 28
Each outer surface of... has a concave groove 32 in the direction across the leg,
33... is recessed. In FIGS. 1 and 2, these grooves are also indicated by numerals 34 and 35. The grooves are formed continuously from the top or bottom surface and also on both side surfaces of the leg.

Also, upper leg portions 19 to 22... and lower leg portions 25 to 2
The groove 32 on each inner side 36, 37 of 8...
Adjacent fastener elements 15 to 1 are located in the center of 33 at a position to be incorporated into a sewing thread structure to be described later.
Each connecting thread 38 runs in the direction of the rows of 8...
39 are arranged, and the connecting threads 38, 39 are
As clearly shown in FIG. 2, each fastener element 15 to 18 is embedded in each upper and lower leg.
...is spelled out in a series. The structural relationship between this connecting thread and each of the upper and lower legs is shown in Figure 2.
3, 14, the upper leg 3, and the lower leg 4.

Fastener elements 2, 9, 10 with the above structure
... and 15 to 18... are formed by extrusion molding of a thermoplastic synthetic resin.

For the fastener element rows having the above structure, the fastener tapes 7 and 40 have their edges 41 and 42 attached to the upper and lower legs 3, 4, 19, 25, respectively, as clearly shown in FIGS. inner surface 5, 6,
36, 37, and the suture threads 8, 4
3, it is integrally sewn and fixed to the fastener element row.

As is clear from FIG. 2, the sewing thread structure of the sewing threads 8, 43 is formed within the grooves 32, 33, 34, 35, so that each connecting thread 1
3, 14, 38, and 39 are integrated into the structure, and when this integrated structure runs in the length direction of the fastener element row, when a lateral attractive force acts on the slide fastener, To firmly fix a fastener element to a fastener tape without shifting in the width direction of the fastener tape. Furthermore, when the fastener elements are engaged and disengaged, the parts of the legs that are sewn and fixed, that is, the suture structure parts, serve as a base point, and the heads of adjacent fastener elements are opened, so that the connecting threads 13, 14, 38, and 39 This does not impede the opening movement between the heads of the fastener elements, and therefore, smooth engagement and disengagement characteristics of the fastener elements can be obtained as slide fasteners.

In addition, the upper and lower legs 3 of each fastener element,
Concave grooves 32, 3 provided on each outer surface of 4, 19, 25
Since the connecting threads 13, 14, 38, 39 running in the direction of the adjacent fastener element rows correspond to the positions to be sewn at the positions corresponding to 3, 34, 35, pitch deviation may occur. The fastener element can be fixed to the fastener tapes 7, 40 without the need for fastener elements. At the same time, each of the connecting threads 13, 14, 38, 39 is hidden by the sewing thread structure and is not visible from the outside.

In the embodiment shown in FIGS. 1, 2 and 3, each of the connecting threads 13, 14, 38, 39 is arranged at a position corresponding to the center of the groove 32, 33, 34, 35. However, in the embodiment shown in FIG.
Connecting threads 44, 45, 46, 47 are connected to concave grooves 48, 4
Sewing threads 52, 53 are placed at positions corresponding to the portions of the upper and lower legs near the leg ends in 9, 50, 51.
The sewing thread structure is made to come in close contact with the side edge of the leg end side.

The above-mentioned connecting threads are arranged on the inside of each of the upper and lower legs of the fastener element, from a position immediately below the sewing thread structure formed by the sewing threads arranged in the concave grooves to a position close to the side edge of the leg end side of the sewing thread structure. The object of the present invention can be fully achieved if it is within the range of .

In particular, as shown in Figures 2 and 4, if the connecting thread is located directly below the sewing thread structure formed by the sewing thread or in close proximity to the side edge of the leg end side of the sewing thread structure, the slide fastener Even if a horizontal pulling force is applied, the connecting thread is supported by the sewing thread, so the fastener element will not shift in the width direction of the fastener tape.

That is, in FIG. 2 or 4, arrows X,
When a lateral attractive force in the direction indicated by Y acts, the lateral attractive force penetrates the fastener tape 7, 40, 54, 55 to form the thread structure of the sewing thread 8, 43 or 52, 53. communicated.

In the embodiment shown in FIG. 2, the sewing thread structure of the sewing threads 8, 43 incorporates the connecting threads 13, 14, 38, 39 integrally within the thread structure, so that the sewing thread structure is free from the aforementioned fastener tapes 7, 40. Sewing thread 8, 43
The lateral attractive force transmitted to the thread structure of the connecting thread 13,
14, 38, 39 directly to the upper and lower legs 3, 4, 19, 25 of the fastener element 2, and the lateral pulling force is transmitted to the sewing thread structure of the sewing threads 8, 43 and the connecting threads 13, 14, 38, 39. It is supported by the fastener element 2 that meshes with the fastener tapes 7 and 40 that are integrally fixed via the fastener tapes 7 and 40,
Lateral displacement between the fastener tapes 7, 40 and the fastener element 2 is no longer caused. In other words, the fastener element 2 is prevented from shifting in the width direction of the fastener tapes 7, 40.

In the embodiment shown in FIG. 4, the lateral attractive force in the directions indicated by the arrows X and Y is transmitted to the sewing thread structure of the sewing threads 52 and 53, and the fastener tape 54 ,55
shows a behavior of lateral displacement in the directions of arrows X and Y, which are the directions of lateral attraction, but the fastener element is located closely to the leg end side of the sewing thread structure formed by sewing threads 52 and 53, that is, to the side edge on the outside in the direction of action of lateral attraction. As a result of the sewing thread structure being caught by the connecting threads 44, 45, 46, 47 of 56 and prevented from slipping, the occurrence of the above-mentioned lateral slipping of the fastener tapes 54, 55 is prevented. In other words, the fastener element 56 is prevented from shifting in the width direction of the fastener tapes 54, 55.

The slide fastener stringer according to the present invention has the structure and function described above, and the connecting thread is connected to the fastener element leg from a position directly below the sewing thread structure formed by the sewing thread. Because it runs through the area close to the side edge of the end side, the fastener element can be fixed to the fastener tape without causing pitch deviation, and the sewing thread can be inserted into the concave groove of the leg. Since a suture structure is formed, the suture structure either integrates the connecting thread into the structure or closes to the connecting thread at the side edge of the leg end, so that the suture does not move or move. Even if a horizontal pulling force acts on the slide fastener, the fastener element will not shift laterally in the width direction of the fastener tape because the sewing thread structure and the connecting thread are of an integral structure, or because the connecting thread is caught on the sewing thread structure. , the fastener element is firmly fixed to the tape. Furthermore, when the fastener elements are engaged and disengaged, the sewn and fixed parts of the legs become the base point and the head of the fastener element opens. Smooth engagement and disengagement characteristics can be obtained.

Furthermore, since the connecting thread is a single thread and is covered by the thread structure formed by the sewing thread, the appearance is improved.

[Brief explanation of the drawing]

Fig. 1 is an enlarged plan view of an example of the embodiment in a meshed state, Fig. 2 is a sectional view taken along the line in Fig. 1, and Fig. 3 is a sectional view taken along the line -
This figure is an enlarged perspective view of the fastener element row shown in FIG. 1, and FIG. 4 is an enlarged sectional view of another embodiment, similar to FIG. 2. 1...Slide fastener stringer, 2,
9, 10, 15-18... Fastener element, 3, 19... Upper leg part, 4, 25... Lower leg part,
5, 6, 36, 37...Inner surface of upper and lower legs, 7, 4
0... Fastener tape, 8, 43... Sewing thread,
13, 14, 38, 39... Connecting thread, 33, 3
4, 35, 36...concave groove.

Claims (1)

[Claims for Utility Model Registration] 1. A fastener element having upper and lower legs and formed in an inverted U-shape has a concave groove in which a sewing thread is disposed on the outer surface of each of the upper and lower legs. The adjacent fastener elements are recessed across the recessed grooves and adjacent to each other, from a position immediately below the sewing thread structure formed by the sewing thread disposed in the recessed groove, on the inside of each of the upper and lower legs. Within the range of the position close to the side edge on the leg end side, each fastener element is connected in a series by a connecting thread running in the direction of the rows of adjacent fastener elements, and each fastener element is connected to the upper and lower The fastener tape inserted into the gap between the inner surfaces of each leg is sewn and fixed by a sewing thread arranged in the concave groove, and the connecting thread is covered by the sewing thread structure. Slide fastener stringer. 2. The slide fastener stringer according to claim 1, wherein the connecting thread is embedded in the leg.