JPS62104938A - Seat belt - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a single-use seat belt. For more details, especially for luxury cars and sports cars, IIi! 15Ii
The present invention relates to a seat belt that is characterized by being imparted with high strength, low elongation, large feel, soft touch feeling (gives a flexible feel when touching the skin).

<Prior art> The characteristics required for 4C (originally a single-use seatbelt) are to reliably support the impact force received by the occupant during the first K collision, as well as to absorb and alleviate the impact force. The belt itself is lightweight and durable. Thirdly, the design characteristics of the seatbelt, namely the appearance quality (shape).

(patterns, etc.) and touch sensation (the soft sensation you get when you touch your body, and the sense of unity with your body), and wear (use).
It needs to have a quality that does not feel strange inside (and gives a sense of luxury), in other words, it needs to have a soft touch that feels good to the touch and gives a sense of luxury.

Therefore, in order to satisfy the first required characteristic, it is necessary to have a high tensile strength that can reliably support the impact force received by the occupants in the event of a collision, and to have A that can sufficiently absorb and alleviate the impact force of K11i.
It is necessary to have six relaxation characteristics. As a means for that purpose, conventional methods 5 to 8. High-strength nylon or polyester long fibers of about V/denier are used.

For example, if two or more different types of raw yarn are used for the warp yarn of one belt, and at least one woodcutter among them uses the weaving shrinkage ratio of the same raw yarn, the weaving shrinkage rate is determined from the middle part of the belt to the both ends of the belt along the warp direction. "Energy absorbing belt characterized by being configured so that the
1゛High tensile strength and low elongation 8g1 low elongation yarn 31 and low tensile strength and low elongation 2nd low elongation I! L cool yarn 3. The first low elongation yarn 31 is slack t relative to the second low elongation yarn 3t.
Seatbelt webbing characterized in that a low elongation raw yarn 3 consisting of a substantially bonded MK yarn is woven in the longitudinal direction of a woven woven fabric IK receipt tolt webbing consisting of a high elongation yarn. (Japanese Patent Publication No. 53-2981) Two or more types of raw threads with different elongations are used in the warp thread of one belt, and the number of raw threads constituting the warp thread that is cut before the belt finally cuts f& is small ( "Energy absorbing belt characterized by combining two or more different weave shrinkage ratios to the same fiber yarn of one kind" (% disclosure 54-195
(No. 11 Publication) [1) The yarn is made of warp yarns of 2fi or more of the same type having the relationship that the lower the elongation at break, the higher the initial elastic modulus, and the lower the elongation at break, the higher the f & tc, and the lower the initial elastic modulus, and , the weaving shrinkage ratio of the knotweed yarn is set to be low for yarns with low elongation at break, and &! Energy absorbing bell 1゜2 belt yarn tt is heat-shrinkable, characterized in that the yarn has a high breaking elongation and has a woven structure with a pore volume of 40% or less. ``Method for producing an energy absorbing belt, which comprises weaving two or more possible raw yarns of the same type with different ik ratios, and then heat-treating them under tension''(t# Kosho No. 55-11053) Public bulletin)
It is Nato.

That is, these technical means are tensile force, elongation.

By combining two or more types of warp yarns with different weave ia'4, etc., it is possible to smoothly absorb two or more turbulences. However, as a result of actually testing and considering these methods, it was found that energy absorption must occur in stages in either method. That is, it is difficult to absorb energy continuously and smoothly. It is true that the temporary sudden impact force that the crew receives has been alleviated compared to the past, but two or more types of warp threads take over the impact force one after another (at the stage of the handover, the unpleasant impact force can be created). There are still issues such as whether the crew should be able to take the test.

Furthermore, as mentioned above, if most of the impact energy in a collision is to be absorbed by the seatbelt alone, it is important to consider how the seatbelt is worn by the occupant, the tightness of the seatbelt when worn, and the physique of the wearer. Due to these factors, even when wearing a 7-t belt with the same elongation and the same -fi rating, the rate of dimensional change of the entire sorting belt at the time of collision will differ. In other words, if a relatively fat person wears a seatbelt relatively loosely,
In the event of a collision, the rate of dimensional change in the length direction of the entire sorting belt becomes large, and the front part of the press-fitted body, such as the handle of the driver's seat, comes into contact with the front part of the press-fitted body, causing injury to the human body. Additionally, if a relatively thin person wears a seatbelt with the seatbelt tightened relatively thickly, the rate of dimensional change in the length direction of the entire seatbelt during a collision will be relatively small, making it difficult to absorb enough impact energy. It is strong against the human body without causing any damage (it can cause damage to the human body, such as destruction of internal organs, etc.).Sometimes it is like a sports car (for vehicles that are often driven at high speeds in the evening, the above is an extremely important issue). becomes.

Therefore, rather than trying to absorb most of the impact energy with the seat belt itself (15), it is better to design the seat belt stretch to the minimum necessary so that it can reliably support the occupant in the event of a collision. The jig M (IJ) attached to the seat belt absorbs the
tractor.

It is desirable to combine a spring with a slip joint (slip joint, tongue, etc.) and design it so that it can be used. The present invention is the result of research into seat belts from such a viewpoint.

The second required characteristic is 9, and the present invention is set to 5 to ensure strength (1 ton/belt or more) that can reliably support the occupant in the event of a crawling collision. Restrictions on the width direction of the sorting belt (usually 45 to 5
5U) is also available, but it is impossible to reduce the number of yarns in the warp direction to below the current level as long as the currently available high tensile canylon or polynisdel long fibers of about 5 to 81/denier are used. Therefore, it is difficult to reduce the weight of seat belts.

The 30th required characteristic is that the warp is made of long fibers that have numerous loops on six sides and have a strength of 317 denier or more, and that both selvedges are woven in a bag-like shape. Seatbelt waving”
) have been proposed. However, even in this case, the currently used 1 is 5 to 8:! As long as high tensile strength Kanylon or polynylon with a denier of about 100 denier is used, as mentioned above, there is a limit to reducing the number of yarns in the warp direction in order to ensure the strength required for the seat belt.

(Object of the Invention) The present invention has been devised as a result of intensive research in order to solve such problems in the prior art.

In other words, two or more types of warp yarns with different warp properties have sequential defects.
There is a limit to inheriting the relaxation of force, 5 to 8 J
//When producing seat belt twemping using high tensile strength long fibers of about 1 denier as warp or weaving yarn, there are limits to weight reduction, design characteristics, and touch feeling. Therefore, a single super tensile strength, low elongation yarn having a tensile strength of 161/ten or more is used as the core, and a thin napped fabric is composited on the surface of the core, thereby providing the necessary tensile strength for a seatbelt. surface design characteristics,
It has an improved touch feel and a luxurious feel.

The absorption of impact energy is mainly achieved by improving the jigs that are combined with the seat belt, such as retractors, slip joints, and tanks, or by combining these with springs. It aims to achieve the objectives of

<The structure of the invention, that is, the present invention is based on tensile breakage of the warp yarns constituting one base fabric! 1 degree is 16y/
A seat belt having a denier of 1 denier or more, a breaking elongation of 1.5 to 10%, and made by polymerizing the base fabric with a nap fabric.

The warp yarns constituting the base fabric here are fibers having a tensile elongation at break of 16 I/denier or more and a tensile elongation at break of 1.5 to 10%. Specifically, aramid fiber.

High-strength long fibers such as polyethylene, polyvinyl alcohol, and polyacrylonitrile.

7 lamid fiber, 80 mol% or more (preferably 90 mol% or more) of the repeating units are -NHkr, NH
COAr, a fiber made of co-aromatic homopolyamide or aromatic copolyamide 7ξ.

In this case, the weft may be the same as the warp, or a conventionally used long fiber yarn such as polyester or nylon may be used. A standing fabric is polymerized on one or both sides of the seat belt core woven in this manner.

For polymerization, known methods such as adhesion and fusion may be used. The fibers used for this raised fabric may be any known fibers, but so-called ultra-fine M fibers are preferred for adding a fur-like texture. For example, ultra-fine fibers obtained by known methods such as super draw or high-speed spinning - Island-in-the-sea type or mixed spinner composite fibers made of two different polymers, forming a four-strand structure. Ultrafine fibers obtained by filtration (after which the sea components are dissolved and removed); ■Multi-layer laminated composite fibers made of two different polymers; after forming a 1MJ fabric, each metal component is There are ultrafine fibers that can be obtained by splitting and exfoliating or by dissolving and removing 10,000 polymer components. As the polymer for forming polar a-stem fibrils, synthetic polymers such as polyesters such as polyethylene terephthalate, polyamides such as nylon 6JP, nylon 66, and poly-7-crylonitrile are particularly preferred. The denier of the ultra-fine fiber is
0. U U O1~1. O1 preferably 0.001-0
．． 6. More preferably 0. U1~0.5. When the denier is smaller than o, o o o
If it is larger, the texture of the raised fabric will be rough and a suede-like texture will not be obtained, which is inappropriate.

In the present invention, the term "fabric" refers to a nonwoven fabric, a knitted fabric, or a combination thereof, and refers to a fabric having a napped surface made of ultrafine fibers. The raised fabric of the present invention is made using the ultrafine fibers alone or in combination with other conventional polynisder fibers (thickness greater than 1 denier), polyamide fibers, polyacrylonitrile fibers, etc. For example, if a nonwoven fabric of the present invention is made using a known method using the ultrafine fiber staple described in (1) above, the raised fabric of the present invention can be directly obtained. When the ultrafine fiber stable described in (1) above is used by treating with a sea component polymer solvent, the raised fabric of the present invention can be obtained by raising or buffing the surface of the nonwoven fabric. A satin fabric is prepared by using the spun yarn or multifilament yarn of the ultrafine fibers as the weft yarn and the spun yarn, multifilament yarn, or crimped yarn made of fibers of normal thickness as the warp yarn, and then raising the surface of the fabric. (In some cases, a napped fabric can be obtained by combining the step of removing the sea component polymer.Also, if you create a two-sided weft fabric with satin texture on both sides and raise it on both sides, a seven-sided napped fabric can be obtained.) Obtain it. Using a spun yarn or multifilament yarn of ultra-fine fibers as a front yarn, create a warp knitted fabric using a spun yarn, multifilament yarn, or crimped yarn made of fibers of normal thickness as a zeta-linked yarn, A napped knitted fabric can be obtained by raising the surface of the knitted fabric.

In the present invention p 1g! The raised fabric obtained as described above is then generally dyed or printed by conventional methods and, if necessary, sheared and/or brushed.

or. This raised fabric is dyed or printed.

Furthermore, if necessary, a resin that lowers the surface friction coefficient of the water-repellent resin 2, such as a soricone resin such as methyl hydrodiene polysiloxane or dimethyl polysoxane. A fluororesin such as chloroalkyl Nisder of polyacrylic acid or a wax-based resin is applied. These w
Fats are used as emulsions or MUs in organic solvents8
It is applied to the raised fabric by the beach impregnation method, the coating method, or the Sudan method. In addition, in order to obtain this napped fabric, the surface of the nonwoven fabric, woven fabric, Ia material, etc. is buffed or raised, and the napped fabric is dyed or printed, and if necessary, shearing or plunging operation and repellent are performed. Water-based 9 surface-low-friction imparting W process, etc. is carried out in advance by adhesion compounding with the seatbelt core body, mVc wide (several times wider than the seatbelt), and then cut to the required width. It may also be combined with the seat belt core. Alternatively, after cutting in advance during the optimum period necessary for bonding and combining, the valley processing may be performed, and then the bonding processing may be performed. Alternatively, the above-mentioned various treatments may be applied after the seat belt core and the raised fabric are bonded and composited. Furthermore, the above-mentioned various processing treatments and combined layer contact processing may be divided into several steps or may be performed in combination depending on the convenience of processing equipment, processing rods, etc. For example, it is dyed or printed, and then processed with a wide cloth, including shearing or brushing depending on the woman's needs.Then, it is cut to the width required for the sorting belt, and it is bonded and composited with the seat belt core. It is also possible to carry out processing to give the surface low friction properties.

<Effects of the invention> What is the seat belt obtained in this way? It has surface design characteristics and a luxurious feel that were not available in the past, such as a suede-like feel and a flat-touch feel, and is also strong enough to sufficiently support the occupant even in the event of a collision. Although the seat belt can be used in place of the conventional seat belt without causing any problems, it is preferable that the seat belt be combined with a suitable spring capable of absorbing energy. It is more effective to put this into practical use so that the absorption of the impact energy is done more effectively.

<Example> The present invention will be specifically explained below using Examples.

Example 1 Tensile strength at break 22y/denier, tensile elongation at break 3.4%
7-lamid long fiber, Kevlar@ (manufactured by DuPont)
The warp is 1500 denier/1000 filament, and the weft is polyethylene 7/filament 250 denier, with a warp density of 50/25 tm% and a weft density of 16-7.
I woven a 50I 111+ width seat belt embossing using 25B.

On the other hand, according to the method disclosed in Japanese Patent Publication No. 53-10169, constituent parts consisting of napolyethylene terephthalate and poly-C-kabumitsumide (nylon 6) are arranged in a 16 (161) ring shape in alternating contact with each other, and the length of the fiber is It stretches in the direction and forms a tubular body as a whole.The thickness of each component part is 0.23 denier, but the thickness is 3.7 denier.
A 5-tenier hollow annular composite fiber 1 was produced.

Hollow circular composite fiber multifilament yarn (300 denier/80 filament)) KS15 used as weft
A single-twisted yarn with a twist of 0 T/m was used, and the warp was a woolly yarn of polyethylene terephthalate (100 denier/24 filament) with a twist of S 200'r,/m, and the warp was 3/l. I created a fabric with torn oblique patterns.

The resulting fabric was first relaxed in a hot water bath at 98°C for 30 minutes and then dried at 120°C for 3 minutes. After applying an oil agent mainly composed of mineral oil, the fabric was raised 20 times at a speed of 30 meters/minute using a cloth raising machine on one side of the fabric, and then heated at 170°C for 30 seconds using a pin tenter heat sector. The heat was set.

Thereafter, the obtained one-sided napped fiber was treated with 4% (based on the weight of the fabric) of Duranol Plue G (C, 1, A 63305, 1. Trade name of a disperse dye manufactured by C, 10 company).
I! 11mm to 0.2Ml/l and f7ta L/7X
Dyeing was carried out at 130° C. for 60 minutes in an aqueous dye bath containing IM/l of a dispersant containing a condensate of fluorine and formamide as a main component. The fabric was then washed with 8 liters of water of a non-ionic detergent.
It was soaked at 0°C for 20 minutes and dried at 120°C for 3 minutes.

The dyed single-sided napped fabric was soaked in a 5% emulsion of a fluorine-based water repellent, squeezed until the pink-up was 75%, and then dried at 120° C. for 3 minutes. Then 3.1% emulsion Y of urethane prepolymer: *
Use a 45 mesh gravure roll to apply it to the back side (non-raised side) of the front raised fleece fabric! The fabric was coated with 1.25% of L Ishido (Daisen Sarado). After that, the napped fabric was dried at 120'C for 3 minutes, and then dried at 150'C.
After heat treatment for 30 seconds, the front and back sides of the napped fabric were each buffed once with a roller sander equipped with 100 mesh sandpaper.

The obtained one-sided napped fabric had excellent water repellency, extremely excellent light-eating effect and repellency, and also had a rub fastness of 9-color dyeing of grade 4 to 5.

After cutting two pieces of this suede-style piece to the same width (51±2 m) as the wool carpet seat belt quetzbing,
The back side (non-raised side) was coated with 9-rethane J-shin (product name: Crispon; Dainippon Inn 111I) for adhesive processing, and both sides of the 7-toe belt embinck were coated with 8-seat belts. Created. The obtained seatbelt not only had a surface appearance with a soft touch and an lliill-grade feel, but also had good compatibility with clothing of the human body layer even during wearing. Physically, as shown in Table 1, the objectives for the next term were achieved.

Example 2 Tensile strength at break 259/denier, tensile elongation at break 4.2%
Polyno (rough ethylene terephthalamide M fiber (Teijin 4g) ISO.

Denier/1t) 00 filament is used for the warp and L sieve yarn, using the same fiber of 40υ tenier/200 filament and 4 warp density 50-725.

Embossing for seat belts with a weft density of 12 threads/25 dragons and a width of 50 cranes was made of K11l twill weave. On the other hand, JP-A-54-4
According to the method disclosed in Publication No. 2421, constituent parts consisting of polyethylene terephthalate and polystyralene are arranged adjacent to each other alternately in a ring shape of 1 mm and φ and extend in the longitudinal direction of the fibers to form a body as a whole. The Xt ratio of prephthalate and polystyrene is 70:30F The denier of each component of polyethylene terephthalate is 0.09
A medium-walled annular composite fiber having a thickness of 2.1 tenier was produced.

As the weft, this hollow annular composite fiber multifilament yarn (190 denier/90 filament) has 825
Single-twisted yarn twisted at 0 T/m is used, and the warp is made of 75 denier/24 polyethylene terephthalate.
A filament woolly yarn (tentative) with a twist count of 5.
Using 200T/m, a 5-ply satin weft two-arashi weave fabric was created.

The resulting fabric was dried in a hot water bath at 98°C for 30 minutes with Relanx L and 120°C for 3 minutes. After a long time,
The fabric was washed five times with trichloroenalene to dissolve and remove substantially all of the polystyrene in the hollow annular composite fibers.

The fabric was then dried, coated with an oil agent containing mineral oil as a main component, and one side of the fabric was raised 20 times at a speed of 30 m/min using a one-needle cloth raising machine. A double-sided raised fabric wfA consisting of 9 denier) was produced.

The obtained double-sided napped fabric was preheated at 170°C for 30 seconds using a pin tenter and a heat saver, and then heated with Iteyuranol Plug G (C).

■, 633 (15, I, C, 1, fJ of disperse dye made by Co., Ltd.)
J-titled ink 4% (based on textile storm release, 0 densities and acetic acid)
．． 2rni/l and a dispersant whose main component is a condensation product of naphthalene sulfonic acid and formaldehyde,
Dyeing was carried out for 60 minutes at 2130° C. in an aqueous dye bath containing V/l. The fabric was then treated with an aqueous solution of a non-allergenic detergent for 800 ml.
It turned pink for 20 minutes.

Dry at 120℃ for 3 minutes.

The single-sided napped fabric thus obtained was bonded to both sides of the seat belt embossing in the same manner as in Example 1 to form a composite, thereby producing a seat belt. The obtained seat belt had a good appearance quality similar to that of Example 1. The physical properties were also good as shown in Table 1.

Example 3 Tensile strength at break 28 y/d, tensile elongation at break 4.4%
High strength polyethylene long fiber yarn.

The warp is 1200 denier/118 filament, and the same fiber polyethylene monofilament 250 tenier/48 filament is used for the weft, 8M density [52 filaments/2
A 50 fl width twill weave seatbelt etching was woven with a weft density of 18 threads/25 tt. A seat belt was prepared by using the single-sided napped fabric used in Example J on both sides of the uninching hinge, and tightening the VC shield composite composite so that the napped side was exposed. The physical properties of the obtained seat belt are as shown in the table, and the appearance quality, t! The L match was good as in Example 1.

Comparative Example 1 Tensile fracture stiffness 7.75, V/denier. Tensile fracture @j
1st F! L12.5% polyethylene terephthalate long fiber yarn 1000 denier/250 filament double yarn is used for the warp and L weft, warp density 56 725 m, weft density 50 denier/25 m, 50 m + width We created a twill weave seat belt. The belt was dyed using a dye bath having the following formulation at a temperature of 250°C and a dyeing time of 1 minute.

Dianix-E-Blue (manufactured by Mitsubishi Kasei): 10
01/ID1aper TL (manufactured by Myojo Chemical)
: 11/1 alginate powder:
0.51/1 acetic acid: (adjusted to pH 4) Q,
1114/J After washing with water, aqueous dispersion of polyester unthane resin Pondick 1620 (manufactured by Nippon Reichhold ■; 10% by weight
], and then heat treated at 180° C. for 2 minutes to obtain a seat belt with a width of 449 m. The physical properties of the obtained seat belt are shown in Table 1 as a comparative example.

All of the seat belts of the present invention have sufficient tensile strength at break, and although they are subjected to composite processing, their thickness is almost the same as conventional products, and they also have a low elongation and a smooth surface texture. It was very good.

Procedural amendment March 9, 1986! Mr. Samurai Kogo Agency Director-General 1, Indication of Case Patent Application No. 1986-242913 2, Name of Invention Seatbelt 4゜ “Detailed Description of the Invention” column of agent specification (1) Page 2 of specification The statement "5-8 g/denier..." in the bottom two lines is corrected to "5-10 g/denier...".

(2) The statement on page 7, line 2 of the specification “...5-8g/
Denier..." to "...5-10g/denier...
・” I corrected it.

(3) Description on page 7, line 13 of the specification: “...5-8g
/ denier..." to "...5-10g/denier...
"..." I corrected myself.

(4) Statement ii on page 8, line 4 of the specification! "..., 5~
8g/denier..." is corrected to "..., 5-10g/denier...".

(5) The statement [... tensile elongation at break] on page 9, line 7 of the specification is corrected to "... tensile strength at break".

(6) The statement "...double-sided napped fabric" in the first line of page 21 of Akira wI@ is corrected to "...single-sided napped fabric."

(7) The statement "...double-sided napped fabric..." in line 3 of page 21 of the specification is corrected to "...single-sided napped fabric..."

(8) In the third line of page 22 of the specification, the statement "...high-strength polyethylene long fiber yarn" is corrected to "...high-strength polyethylene filament fiber."

(9) Description in the first line of page 23 of the specification [... density 5
6 lines/25mm, latitudinal density 50 lines/'' to ``...longitudinal density 1
00 lines/25mm, latitudinal density 20 lines/''.

(10) The statement "Fiber yarn..." in the second line from the bottom of page 22 of the specification is corrected to "Fiber...".

(11) Description on page 23, line 2 of the specification a r-, 50m
Correct "m width..." to "..., 53mm width...".

(12) In Table 1 on page 24 of Specification N, in the 8th line, y, "nylon" is replaced with "nylon 6J, rl, 39
Correct J to ``1.3.

(13) The statement “〃” in lines 9 and 10 of the same page is corrected to “Polyester J, [1,41J] to [1,30J.

(14) The description “l/” in lines 11 to 12 of the same page was changed to “1.31” for polyester nylon 6J, rl, 35J.
Correct it with J.

(15) The description r1.42J on the 13th line of the same page was changed to 11.32
Correct it with J.

that's all

Claims (2)

[Claims] (1) A seat belt in which the warp constituting the base fabric has a tensile strength at break of 16 g/denier or more and an elongation at break of 1.5 to 10%, and the base fabric is polymerized with a nap fabric. (2) The single yarn fineness of the fibers that make up the raised fabric is 0.000
The seat belt according to claim (1), which has a denier of 1 to 1.0.