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air bag

A technology of airbags and sewing threads, applied in fabrics, vehicle safety arrangements, textiles, etc., can solve the problems of difficult practicality of airbags, increased airbag mass, and no discussion of the deviation of sewing holes, etc., to achieve light weight and containment good effect

Active Publication Date: 2014-10-01
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its disadvantages are that the operation of the integrated sewing auxiliary fabric is complicated, the mass of the airbag is increased, and the cost is increased. Therefore, the airbag is difficult to be practical.
However, in these patent documents, there is no consideration at all to improve the hole deviation of the sewn part by specifying the relationship between the elongation of the "base fabric" and the "sewing line" when the airbag is deployed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] The used warp yarn and weft yarn are nylon 66 filament raw yarn (the monofilament section is a circular section) with a denier of 310dtex / 96f, a tensile strength of 8.6cN / dtex, a tear elongation of 20%, and a boiling water shrinkage of 9.0%. The weaving density is 66 / inch, after weaving plain weave with water-jet loom, directly pass through the hot water shrinkage tank without drying, and then control the temperature T1 of the first stage to 120 by using a two-stage suction drum dryer. °C, the drying process of controlling the temperature T2 of the second stage to 125 °C is completed. The physical properties of the obtained base fabric are shown in Table 1.

[0103] As the sewing thread, nylon 66 thread with a fineness of 920dtex, a tensile strength of 8.6cN / dtex, and a tear elongation of 22% is used for both the upper and lower threads. Flat seams are used, and the sewing needle density is 4.5 needles / cm. The above-mentioned base fabric is used. A sewn sample simulati...

Embodiment 2

[0105] A base fabric and a sewn sample were produced in the same manner as in Example 1 except that the warp and weft weave density was 63 threads / inch. Table 1 shows the results of evaluating the produced base fabric and sewn samples in the same manner as in Example 1.

Embodiment 3

[0107]Except that the used warp yarn and weft yarn are nylon 66 fine filament raw yarn (single filament section is a circular section) with denier 270dtex / 84f, tensile strength 8.6cN / dtex, tear elongation 19%, and boiling water shrinkage 9.0%. Except that the density was 70 counts / inch, base fabrics and sewing samples were produced in the same manner as in Example 1. Table 1 shows the results of evaluating the produced base fabric and sewn samples in the same manner as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides an airbag which is capable of solving the above-mentioned problem for vehicles, comprising a main body part which is formed by foundation fabrics, and a sewing portion which is formed by using sewing wires to sew the main body part into a bag shape. The airbag is characterized in that: when the density of a sewing needle of the sewing portion is set as a (stitches / cm), the difference between an extension ratio of the sewing wires when applying 31.3 / a (N per wire) tension to the sewing wires and the extension ratio of the foundation fabrics when applying 62.5 / a (N per stitch) tension to the foundation fabrics is in the range of 0-5.0% in warp directions and weft directions; and the permeation volume of the sewing portion under 40 kPa in the initial state of unfolding the airbag is smaller than 50mm / cm / sec so as to reduce the gas leakage leaked from the sewing portion of the airbag caused by the high output and high temperature gas generated by the compacted aerator. The airbag has the mechanical property capable of bearing high temperature gas, and the airbag is light in weight and good in accepting performance.

Description

technical field [0001] The present invention relates to an airbag for ensuring the safety of occupants in the event of a vehicle collision. More specifically, it relates to an airbag having mechanical characteristics capable of withstanding high-output and high-temperature gas from an inflator that has been compacted in recent years, and reducing air leakage from sewn parts. , light weight, good containment airbag. Background technique [0002] In recent years, airbags have been widely used as equipment for protecting the safety of occupants in the event of a vehicle collision. As a base fabric for an airbag, a fabric surface coated with silicone rubber or the like is used. However, the airbag using such a surface-coated fabric has the disadvantages of increasing the cost due to the coating process, and has the disadvantages of becoming heavier and thicker. Airbags, the so-called uncoated airbags, have been studied in depth, and some of them have been used in practice. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R21/235D03D1/02
Inventor 仓本隆宏北村守
Owner TOYOBO CO LTD
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