JPH0437172B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to webbing for seat belts, and more specifically to webbing for seat belts in which a special pattern is woven using a twill structure among the three basic structures of textiles. Regarding.

(Prior Art) Webbing used in vehicle seat belts must meet various performance conditions such as predetermined tensile strength, elongation, weather resistance, abrasion resistance, flexibility, etc., as well as being constantly exposed to public view.
Moreover, since it is used in close contact with the clothing of the occupant, it is also required to have a certain degree of aesthetic appearance.

However, conventional webbings mainly focus on the above-mentioned performance conditions, and various improvements have been made to improve them, but the appearance of webbings has been limited to vertical stripes due to a simple weaving structure, and patterned patterns partially dyed. Even if some types of webbing can be seen, most of the webbing currently in use is only being diversified in color to match the colors of car interior parts and seats, and no major improvements have been seen. is the current situation.

However, as seatbelt webbing requires extremely high tensile strength, the warp density is large compared to the weft density, and almost no weft is exposed on the webbing surface, leaving only the warp, so it has been widely used for seatbelts. The surface of the webbing is woven with a normal 2/2 twill weave, in which a complete weave is made up of only four warp and warp threads, or a 2/2 herring twill weave, such as Yamagata Oblique. Almost no diagonal lines appear, and the boundary line where the diagonal lines change in Yamagata diagonal weaving is only visible, and it is 2/2 that the weaving structure produces clearly visible large patterns on the webbing surface. This was extremely difficult within the limited range of the twill structure.

Figures 8A and 8B show two typical types of weaving structures that have been widely used in seatbelt webbings. These two types of weaving structures are both 2/2 double-sided 4-ply twill structures that are suitable for the performance requirements and mass production of seatbelt webbings, and each complete structure consists of 4 warp threads and 4 weft threads. It is usually woven using four heddles.
Note that A in Fig. 8 is a normal double-sided 4-ply twill weave with diagonal lines in a certain direction on the webbing surface, and B in Fig. 8 is a double-sided 4-ply twill weave with chevron-shaped diagonal lines on the webbing surface. The weaving structure in Figure 8A is changed, and the only difference is the order in which the warp threads are threaded through the healds.
It consists of four pieces. In other words, the intersection of the warp and weft is the intersection between warp threads No. 1 and No. 5, and between warp threads No. 2 and No. 5 in Figure A.
6. Warp threads No. 3 and No. 7, warp threads No. 4 and No. 8 are the same, and in Figure B, warp threads No. 1 and No. 7 are the same.
Warp No.2 becomes No.6, warp No.3 becomes No.5, warp No.4
are the same as No. 8, and both Figures A and B are made of four types of intersecting warps and wefts, so they can be woven using four heddles.

However, as mentioned above, the appearance of the webbing woven with the above-mentioned conventional structure is that the warp density is higher than the weft density, so in the structure shown in Figure 8 (b), no clear diagonal lines appear, and the center of the chevron is There is no major difference in appearance compared to the webbing with the structure shown in FIG. 8A, except for the appearance of vertical stripes due to slight changes in gloss along the edges.

By the way, as mentioned above, two methods are generally used to improve the appearance of webbing: one is to create a pattern using the weaving structure, and the other is to dye a pattern or design onto the webbing surface using transfer printing. When trying to create a complex pattern, this is done by increasing or decreasing the rise of the warp on the weft depending on the pattern, mainly by changing the rise and fall of the warp.Currently, seatbelt webbing fabrics In the 2/2 double-sided twill weave, which is generally widely adopted as a weft, the warp floats (the warp rests on two wefts) and sinks (the warp sinks below two wefts) relative to the weft. Excessive lifting of the warp yarns beyond the fabric structure, where one unit is four weft yarns, which is repeated for each book, causes a decline in the performance conditions of the webbing, especially the abrasion resistance. In this industry, dobby loom structures that can use a number of heddles are used for regular weaving, and are not carried out using only four heddles such as a 2/2 double-sided twill structure. Depending on the type of pattern, it may be necessary to install special equipment on the loom, which may complicate the machinery and increase costs; However, it required transfer paper and special equipment, was not suitable for mass production, and had the problem of increasing costs.

(Problems to be Solved by the Invention) The present invention has been made in view of the above-mentioned circumstances, and is particularly concerned with improving the appearance of webbing. To provide webbing for a seat belt at low cost, which is woven with a special pattern that is rich in variation and has an excellent appearance without degrading performance conditions by simply changing the webbing.

Therefore, the present invention to achieve the above object is based on a complete structure that is woven with four healds, which has conventionally been widely adopted as a fabric structure that meets the performance requirements and productivity of seatbelt webbings. Using a 2/2 double-sided diagonal weave consisting of four warp and warp threads, a jump diagonal is created that interrupts the diagonal line within the diagonal line created by the aforementioned weft, simply by changing the warp arrangement due to heald threading. By appropriately arranging the pattern texture in the width direction of the webbing and making the interruptions of diagonal lines that occur in the width direction of the webbing appear in a pattern pattern on the webbing surface, a large pattern is created over the entire webbing fabric area except for the edges at both ends. This webbing is characterized by a pattern formed only from woven structures.

(Example) Hereinafter, specific aspects of the present invention will be described in detail in accordance with examples shown in the accompanying drawings.

FIGS. 1 and 2 show weaving structure diagrams that are the basis of the webbing of the present invention. In addition, these two basic weave structures are
Both are woven with a 2/2 double-sided twill structure, the same as the conventional weaving structure shown in Figure 8, and therefore the number of heddles on the loom used for weaving is also the same as the weaving structure shown in Figure 8. The number of sheets is exactly the same as in the case, and only the order in which the warp threads are passed through the heddles is changed from that when weaving the weave structure shown in FIG. 8, and therefore the weaving machine can be woven without any change.

First, in the first basic weave structure shown in FIG.
Each part of A ² , A ³ , A ⁴ , AA is warp 4
The A, A ² , A ^{3 ,} 2/2 double-sided twill structure consisting of a book,
The relationship between the diagonal lines of each twill structure in each part of ^A4 , AA is A2 part to A part, ^A3 part to ^A2 part, ^A4 part to ^A3 part, ^A4 part to ^A4 part. against
From three warp threads that are constructed so that the AA portions have a relationship of skipped diagonal lines, and have skipped diagonal lines that interrupt the respective diagonal lines of A, A ² , A ³ , A ⁴ , and AA. Each part of B, B ² , B ³ and B ⁴ is arranged.

The lines C, D, E, and F in the figure are the interrupted parts of the diagonal lines that appear in the width direction of the webbing due to the skipped diagonal texture. A Weft No. 1 and No. 1 over each part of ² parts.
2, D is between weft yarn No. 2 and No. 3 with B ² section in the center and A ² section and A ³ section each, and E is between A ³ section with B ³ section in the center. Between weft threads No. 3 and No. 4 over each part of A ⁴ parts, F is
With the B ⁴ part in the center, diagonal text is applied one by one between the weft threads No. 4 and 5 in each part of the A ⁴ part and the AA part, from the interrupted part C to the interrupted part D, and then to the interrupted part F. Interrupted parts of the line appear as if they are going up in a stairway. This first
In the basic weaving structure diagram, wefts are shown from No. 1 to No. 8, but wefts No. 1 and No. 5 are shown as wefts No. 2 and No. 5.
6, weft threads No. 3 and No. 7, and weft threads No. 4 and No. 8 have the same weaving point (intersection point) with the warp, respectively, and therefore, when weaving this basic woven structure, Regarding the wefts, one unit structure is composed of the first to fourth wefts. That is, this structure is woven by circulating four weft yarns in the length direction of the webbing. In addition, in the figure, the AA part has the same structure as the A part, so in the width direction, the A part to the B ⁴ part constitute one basic unit weave structure, and the unit structure is circulated in the width direction. Webbing of a predetermined width is manufactured in this manner.

Note that the intersection of the warp and weft of the woven structure is warp No. 1.
and No.11, No.14, No.17, No.20, No.23, No.26, No.29
The warp threads No. 2, No. 5, No. 8, No. 18, No. 21, No. 24,
No.27, No.30, warp No.3 and No.6, No.9, No.12,
No.15, No.25, No.28, No.31, warp No.4 and No.7,
Since No. 10, No. 13, No. 16, No. 19, No. 22, and No. 32 are the same, there are only four types of intersections between the warp and weft. Therefore, by simply changing the order in which the warp threads are threaded through the heddles, it is possible to weave with four healds in the same manner as the conventional weaving structure shown in FIG. 8A.

As mentioned above, the warp density of seatbelt webbing is extremely high compared to the weft density, so the weft is covered by the warp, and the weft is hardly exposed on the webbing surface, and only the warp appears. Interruption part of sentence line G, G ² , G ³ , G ⁴ ,
G ⁵ , G ⁶ , G ⁷ , and G ⁸ are hardly noticeable, and only the interruptions C, D, E, and F in the webbing width direction become concave shapes on the webbing surface and become obvious. In addition,
In the first basic weaving structure, the B, B ² , B ³ , and B ⁴ portions are each shown using only three warps, but
By arranging a plurality of B, B ² , B ³ and B ⁴ in parallel, the widths of the interrupted portions C, D, E and F in the webbing width direction can be easily increased.

For example, if you want to triple the width of interrupted part C and double the width of interrupted part D, insert the tissue of part B between each tissue of part A and ^A2 , as shown in Figure 3. It is sufficient to arrange three tissues in parallel, and to arrange two tissues of part B ² in parallel between each tissue of part A ² and part A ³ .

Although Fig. 1 shows only the weaving structure in which the skipped diagonal lines rise sequentially in the upper right direction, the skipped diagonal lines can also be sequentially raised in the upper left direction, or descend sequentially in the lower left direction or the lower right direction. This can be easily understood from the weaving structure shown in Fig. 1, and the interruptions in the width direction that appear by these diagonal lines can be woven in the width direction and in the upward or downward direction. By appropriately arranging them depending on the structure, a variety of pattern patterns can appear on the webbing surface.

Next, in the second basic weave structure of the present example shown in FIG. 2, each part of H, H ² , and HH is the same as that of A, A ² , and A ³ in FIG. 1, which is the first basic weave structure. Corresponding to each part, each part of A, A ² and A ³ has a 2/2 double-sided twill weave with 4 warps, while the second basic weave has a 2/2 double-sided twill weave with 5 warps. The relationship between the diagonal lines of each twill structure in each part of H, H ² and HH, and the parts I and I ¹ between each part of H, H ² and HH are also shown in Figure 1. Like the B and B ² parts, it has a 2/2 double-sided twill structure consisting of three warps, and the relationship of the diagonal lines of the I and I ² parts to the H, H ² and HH parts is also the same as in Figure 1. B, B ² for A, A ² , A ³
This is exactly the same as the relationship between diagonal lines. However, H,
By setting the number of warp yarns in each part of H ² and HH to 5, the relationship between the interrupted part J and J ² of the skipped diagonal line that appears in the webbing width direction is such that J ² has a weft thread compared to the interrupted part J. It appears at the position where you skipped two lines. In this second basic weave organization diagram, the wefts are shown from No. 1 to No. 8 as in the first basic weave organization chart in Figure 1, but the weft thread No.
1 and No. 5, weft thread No. 2 and No. 6, weft thread No. 3 and
No. 7, weft threads No. 4 and No. 8 have the same weaving points (intersection points) with the warp threads, so when weaving the second basic structure, the weft threads are similar to the first basic structure. One unit weave structure is constituted by the first to fourth wefts. In addition, in the figure, the HH part has the same texture as the H part, so in the width direction, I ¹
The parts constitute one basic unit weaving structure.

In addition, the interrupted parts J and J ² in the webbing width direction
Similarly to the first basic weave structure in Fig. 1, the width of H,
I, I ² consisting of three warp threads between each part ^of H 2 and HH
The width can be easily expanded by arranging the woven structures in parallel.

Next, the appearance of typical patterns of webbing woven using the first and second basic weave structures is shown in FIGS. 4 to 7.

First of all, Figures 4 and 5 show webbings that are woven by applying the first basic weave shown in Figure 1 to the weaving in the central part of the webbing other than the ears, and the patterns are all woven using the same weaving structure as shown in Figure 1. It was created by changing the widths of the interrupted parts C, D, E, and F of the diagonal lines that appear in the webbing width direction in Figure 1. In the case of the pattern shown in Figure 4, the width of the interrupted parts is The webbing is widest near the central part K, and both ends L and M center around the central part K.
It became progressively narrower towards the end. In addition, in the case of the pattern shown in Fig. 5, there is a diagonal line in the upper right direction in the direction of the end M with the center part K of the webbing as the border, and a diagonal line in the upper right direction at the end L.
In the webbing direction, the weaving structure is such that the diagonal lines rise one after another in the upper left direction, and the interrupted part of the diagonal lines that appear in the webbing width direction is located at the center of the webbing K.
The portion is the narrowest and gradually widens toward both ends L and M.

Figure 6 shows a webbing in which the second basic weave shown in Figure 2 is applied to the weaving in the center of the webbing other than the ears, and the pattern is woven in the width direction of the webbing in Figure 2. Interruption of diagonal lines appearing J, J ²
It is expressed by changing each width of
The interrupted portion is wide at the center of the webbing and gradually narrows from the center K toward both ends L and M.
Since the adjacent interruption parts J ² and J ² appear at the position corresponding to the exact center between the interruption parts J and J that appear in each part of the H and H ² parts with the part in the center, the interruption parts J and J
At the position facing J ² and J ² , lines in the longitudinal direction of the webbing at the joints of J, J ² , and J appear slightly, giving the appearance a pattern similar to that of brick masonry.

FIG. 7 shows a webbing in which both the first basic weave shown in FIG. 1 and the second basic weave shown in FIG. I will show you what I have woven.

In addition, although these FIGS. 4 to 7 show typical pattern patterns, the width and length of the diagonal line interrupted part in the webbing width direction are By appropriately changing the position, even more varied patterns can be realized.

(Effects of the Invention) As described above, the webbing for seat belts of the present invention does not require any special improvements or special equipment to conventional looms, and the weaving structure is the best in terms of performance as webbing for seat belts. Based on the 2/2 twill weave, which is currently widely adopted as a suitable weave, the diagonal line of the 2/2 twill weave can be created by slightly changing the order in which the warp threads pass through the heddles from the conventional threading order. As a skipped diagonal structure that interrupts the webbing, the interrupted portions of the diagonal lines that appear in the width direction of the webbing are arranged in a predetermined pattern pattern, forming a pattern rich in variation that could not be seen before on the webbing surface. As a result, webbing with excellent appearance can be mass-produced easily and uniformly at the same cost as conventional products without compromising the performance requirements for seatbelt webbing. It is expected to have the effect of increasing the rate of seatbelt use.

[Brief explanation of drawings]

Fig. 1 is a first basic weave structure chart according to an embodiment of the present invention, Fig. 2 is a second basic weave structure chart of the present invention, and Fig. 3 is a variation of the basic weave structure in Fig. 1. FIG. 3 is a weave structure diagram showing a means for changing the structure used when carrying out the present invention. 4 and 5 are external views showing typical patterns of webbing woven by applying the first basic weave structure shown in FIGS. 1 and 3,
Figure 6 is an external view showing typical patterns of webbing woven using the second basic weaving structure shown in Figure 2, and Figure 7 is an external view showing typical patterns of webbing shown in Figures 1 and 2. FIG. 2 is an external view showing a typical pattern of webbing woven by combining both the first and second basic weaving structures. Figures 8A and 8B are weaving diagrams of webbing for seatbelts that have been widely used in the past.A is a 2/2 twill weave, and B is a 2/2 cedar weave. C, D, E, F, J, J ² ...Interrupted portions of diagonal lines appearing in the webbing width direction.

Claims (1)

[Claims] 1) A webbing using a 2/2 double-sided diagonal weave in which the complete weave is woven with four heddles and each weft and warp yarn is four, and the healds are threaded through the diagonal lines created by the said weave. The skipped diagonal weave that interrupts the diagonal lines caused by the change in the warp arrangement caused by the warp arrangement is arranged with an appropriate phase shift in the width direction of the webbing. A webbing for a seat belt, characterized in that the pattern is made visible on the surface of the webbing, and the pattern is formed only by the woven structure in the webbing ground structure excluding the edges at both ends.