JPS5989Y2 - Slide fastener - Google Patents

Description

[Detailed description of the invention] This invention is a tape that is knitted by inserting a core string as a warp thread, and is sandwiched from the front and back sides, such as a continuous zigzag element or an injection-molded element of metal or synthetic resin. This slide fastener relates to a slide fastener that fastens an element that is installed in the tape.The purpose of this slide fastener is to allow the core string inserted into the tape to be inserted into the center of the tape without deflecting through a simple structure, and to attach the element to the tape. To provide a slide fastener which can securely and stably fasten the parts.

Conventionally, the tape provided on this type of slide fastener is usually knitted by layering single coat, tricot, and chain stitch, and a core string is inserted as a warp thread on one side edge. The element is sandwiched between the front and back sides and fixed.

However, the core string of conventional knitted tapes is inserted in a biased state on the opposite side of the tape from which the wale protrudes, so when the element is held between the core strings of the tape, the strength of the attached element is uneven between the top and bottom. The problem was that it lacked stability.

This invention was devised in order to solve the above-mentioned conventional difficulties, and to explain its structure using an example, the slide fastener shown in Fig. 1 fixes a zigzag-shaped elm e) to a knitted tape t. Moreover, the slide fastener shown in FIG. 5 similarly has a knitted tape t provided with a metal element e, and has the characteristics of the knitted tape t, that is, the slide fastener shown in FIGS.゛As shown in Fig. 6, the inserted core string 1 is inserted in such a state that the center portions of the tape t are aligned without being deflected in the thickness direction of the tape t.

Therefore, the knitting tape t is knitted by overlapping the single cord 2, which is woven for 4 stitches, the tricot 3, which is woven for 2 stitches, and the chain stitch 4, in the order of chain stitch, tricot, and single cord, as shown in Figures 3 and 4. At the same time, both sinker loops 2 of the single cord 2 and tricot 3 on one side edge of the tape t
The structure in which the core cord 1 is inserted between a and 3a as a warp is the same as the conventional one, but the single cord 2 uses textured yarn, and by utilizing its flexibility, the yarn of the tricot 3 is inserted into the sinker of the single cord 2. Tighten both sinker loops 2 a by forcing the loop tension to become stronger.
, 3a, and the core cord 1 is pushed toward the single cord 2 side by strong tension, and the core cord 1 is knitted so that the center part of the tape t and the center part of the core cord 1 coincide with each other.

Furthermore, in addition to the means of using a difference in tension, the threads 1 to 3 that sandwich the core string 1 may be made thicker than the other threads to knit.

The structure of the tape t shown in FIG. 6, as shown in FIGS. 7 and 8, is almost the same as that shown in FIG. , tricot 3
It is knitted in three stitches.

This invention has the above structure, and the finished tape t
As shown in Fig. 2 and Fig. 6, the core string 1 is both ale 5
, 5, and protrudes from both the front and back surfaces of the tape t with almost the same thickness. Therefore, the element e is sandwiched therebetween and sewn or crimped. If it is fixed with , it can be attached with an average pressure on both the front and back sides.

Therefore, according to the slide fastener according to this invention,
Since the core string is positioned in the center due to the difference in tension between the knitting yarns, it is extremely easy to position and knit, and the elements attached to this string also have an average push from the front and back sides. It is held under pressure and the center of the element matches the center of the tape in the thickness direction, so when the left and right fastener stringers are engaged, there will be no misalignment on the left and right, providing a stable and good slide fastener. It is something that will be done.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing the slide fastener according to this invention, Fig. 2 is a sectional view showing the tape used in the slide fastener shown in Fig. 1, Fig. 3 is a plan view showing the knitting structure of the tape, and Fig. 4 is a sectional view showing the tape used in the slide fastener shown in Fig. 1. The figure is an exploded plan view of a part of the knitting structure shown in Fig. 3, Fig. 5 is a sectional view showing a similar example according to this invention, Fig. 6 is a sectional view of the tape, and Fig. 7 is the knitting structure of the tape. FIG. 8 is an exploded plan view of a part of the tissue shown in FIG. 7. 1... core string, 2... single coat,
3...Tricket), 2a, 3a...Sinker loop, 4...Chain stitch, 5...Wale, 6...Groove, t...tape, e
······element.

Claims (1)

[Scope of utility model registration request] Chain stitch 4, tricot 3, and single cord 2 are layered in this order to form a tape t, and both sinker loops 2a, 3 of the single cord 2 and tricot 3 are formed at one edge of the tape t.
In a slide fastener in which the core string 1 is inserted as a warp thread between a and the double cord (e) is attached to the - side edge, the thread of the single cord 2 is knitted with a textured yarn, and the flexibility of the textured yarn allows both A tension difference is provided between the sinker loops 2a and 3a so that the tricot 3 is stronger than the single cord 2, and this tension difference presses the core cord 1 toward the single cord 2, thereby tightening the center of the core cord 1 to the thickness of the tape t. The tape is knitted to match the center of the direction, and the tape t
A slide fastener characterized in that an elm (e) is clamped and fastened from both the front and back surfaces on one side edge into which the core string 1 is inserted.