JP6617568B2 - Seat belt webbing - Google Patents

Description

  The present invention relates to a seat belt webbing. More specifically, the present invention has high wear resistance on the surface that slides with the peripheral surface of the webbing insertion hole of the through anchor when pulling out and rewinding the webbing, and the wear of the webbing is suppressed, and excellent durability. The present invention relates to a webbing for seat belts having properties and the like.

  2. Description of the Related Art Conventionally, a seat belt is known as a device that reduces impact during a collision and protects passengers of vehicles such as automobiles and aircraft. For example, in a three-point seat belt, a webbing is inserted into a through anchor provided at the upper part of the center pillar, a tongue plate is locked to a buckle, and the webbing is stretched from the shoulder of the passenger to the chest and waist. In this case, the webbing is inserted through the through-hole of the through anchor at the time of pulling out and rewinding, and there is a concern that durability and the like may be reduced due to wear due to sliding with the peripheral surface of the through-hole. Therefore, a webbing for a seat belt in which low friction yarns are sewn so as to protrude in a distributed manner in the longitudinal direction of the webbing has been proposed (for example, see Patent Document 1). And in patent document 1, since the low friction yarn which carried out dispersion | distribution protrusion contacts a through anchor, it is demonstrated that the winding property to a retractor does not fall in the case of long-term use.

JP 10-2111863 A

  However, in the webbing described in Patent Document 1 above, wefts are woven into a large number of warps to form a belt-shaped webbing main body, and then the low friction yarns are distributed and projected along the longitudinal direction of the webbing main body. Is sewn into. Thus, in the webbing described in Patent Document 1, after forming the webbing main body by normal weaving, a further sewing process is required, which not only increases the man-hours, but is also disadvantageous in terms of cost. Conventionally, webbing is composed of a woven structure that has the same amount of yarn jumping on both the front and back, such as a 2/2 twill structure. After weaving, surface treatment using a resin or an oil agent is applied to improve wear resistance. Is planned.

  The present invention has been made in view of the above-described situation, and has high wear resistance on the peripheral surface of the through-anchor webbing insertion hole and the sliding surface, suppresses webbing wear, and has excellent durability and the like. In addition, an object of the present invention is to provide seat belt webbing (sometimes abbreviated as webbing) which is advantageous in terms of cost because the surface treatment using a resin or the like is unnecessary.

The present invention is as follows.
1. It is a webbing for a belt-like seat belt used by being inserted through the webbing insertion hole of the through anchor,
As the warp, high wear-resistant yarn made of a material with high wear resistance and other yarn made of material with low wear resistance compared to the high wear-resistant yarn are woven,
The warp has a woven structure with different yarn jumping amounts,
The high wear-resistant yarn is exposed more on the surface that will slide with the webbing insertion hole than on the other surface ,
The webbing for a seat belt, wherein the high wear-resistant yarn and the other yarn are woven so that woven structures having different yarn jump amounts are alternately arranged .
2. The 1 wherein weave is a 3/1 structure and 1/3 tissue. Webbing for seat belts as described in 1.
3. The high wear-resistant yarn is a yarn made of a polyamide resin, and the other yarn is a yarn made of a polyester resin. Or 2. Webbing for seat belts as described in 1.
4). The high-abrasion-resistant yarn and the other yarn are polyester yarns, and the high-abrasion-resistant yarn has a higher tensile elongation than the other yarns, and a polyester yarn using a polyester resin having high wear resistance. 1 above. Or 2. Webbing for seat belts as described in 1.

  In the seat belt webbing of the present invention, a high-abrasion resistant yarn and another yarn having a lower abrasion resistance than this yarn are woven as warps, and this warp yarn has a woven structure with different yarn skipping amounts. It has. And more high abrasion-resistant thread | yarn has exposed on the surface of the side which will slide with a webbing penetration hole. Therefore, when pulling out and rewinding the webbing, the wear resistance of the sliding surface with the webbing insertion hole of the through anchor is high, wear of the webbing is suppressed, and excellent durability is achieved. Further, since it can be produced only by a weaving process and surface treatment using a resin or the like is unnecessary, the number of steps is small, which is advantageous in terms of cost. Further, unlike the case where surface treatment using a resin or the like is performed, there is no problem of performance degradation due to dropping off of the surface treatment agent with repeated webbing withdrawal and rewinding.

In addition, when the high wear-resistant yarn and other yarns are woven so that the woven structures having different amounts of yarn skipping are alternately arranged, the high wear-resistant yarn is slid with the webbing insertion hole. By making many exposures on the moving surface side, it is possible to easily make the webbing for seat belts having high wear resistance and excellent durability, and it is possible to eliminate the difference in design between the front and back sides. .
Furthermore, when the woven structure is a 3/1 structure and a 1/3 structure, the entanglement points between the warp and the weft are not too small, not too much, and have sufficient wear resistance and are entangled. The decrease in the strength of the yarn due to the is also suppressed.

In addition, when the high abrasion resistant yarn is a yarn made of a polyamide resin and the other yarn is a yarn made of a polyester resin, the polyamide yarn improves the wear resistance, and the polyester yarn has sufficient light resistance. It can be set as a webbing for seat belts having the property.
Furthermore, the high wear-resistant yarn and other yarns are polyester yarns, and the high wear-resistant yarns are polyester yarns that use a polyester resin that has a higher tensile elongation and higher wear resistance than other yarns. In such a case, the seat belt webbing can have sufficient abrasion resistance and also have excellent light resistance.

Hereinafter, non-limiting examples of exemplary embodiments according to the present invention will be given and described in detail with reference to the plurality of drawings referred to below.
It is typical explanatory drawing of the whole seatbelt apparatus. It is explanatory drawing showing the woven structure of webbing which has a 3/1 twill structure. It is explanatory drawing showing an example of the woven structure of the webbing by which the 3/1 twill structure and the 1/3 twill structure are alternately arranged. It is explanatory drawing showing the other example of the woven structure of the webbing by which the 3/1 twill structure and the 1/3 twill structure are alternately arranged. It is the schematic diagram which looked at the webbing which many high abrasion-resistant threads have exposed on the sliding surface side with a through anchor from the weft direction. It is explanatory drawing showing the woven structure of the conventional webbing which has a 2/2 twill structure.

  The items shown here are exemplary and illustrative of the embodiments of the present invention, and are the most effective and easy-to-understand explanations of the principles and conceptual features of the present invention. It is stated for the purpose of providing what seems to be. In this respect, it is not intended to illustrate the structural details of the present invention beyond what is necessary for a fundamental understanding of the present invention. It will be clear to those skilled in the art how it is actually implemented.

1. Seat belt device The seat belt device 4 in which the seat belt webbing 1 is used is not particularly limited. For example, the three-point seat belt device has the following configuration (see FIG. 1).
In the three-point seat belt device 4, one end of the seat belt webbing 1 is attached to a retractor 5 disposed below the pillar of the body panel, and the webbing 1 is pulled out from the retractor 5 when the seat belt is mounted. .

  Further, the webbing 1 is inserted into a webbing insertion hole of a through anchor 6 disposed at the upper part of the pillar of the body panel, and one surface side thereof is slid with the peripheral surface of the insertion hole. Further, the other end of the webbing 1 is attached to an anchor 7 disposed on the body panel side of the seat. Further, a tongue plate 8 is fitted in the middle portion of the webbing 1 in the length direction. When the seat belt is mounted, the tongue plate 8 is attached to the buckle attached to the side opposite to the side on which the anchor 7 is attached. 9 is locked. On the other hand, when the seat belt is released, the tongue plate 8 is detached from the buckle 9, and the webbing 1 is rewound to a position where the tongue plate 8 is close to the through anchor 6.

2. Seat belt webbing (1) Wear resistance of webbing The seat belt webbing 1 is inserted into the webbing insertion hole of the through anchor 6 when the seat belt is mounted and released, and the length of the webbing 1 One surface side of the predetermined length range of the intermediate portion in the direction slides with the peripheral surface of the webbing insertion hole. Here, the webbing 1 is woven with a high wear resistance yarn and another yarn having a lower wear resistance than the high wear resistance yarn as the warp. It has a different woven structure. The webbing 1 is used such that one surface side on which more highly wear-resistant yarns are exposed than the other surface is a sliding surface with the webbing insertion hole. Thereby, the abrasion resistance in a sliding surface becomes high, abrasion is suppressed, and it can be set as the webbing 1 with high durability.

Examples of the weaving structure of the webbing 1 include twill weave and plain weave. Further, the webbing 1 has a woven structure in which the warp and weft yarns are different from each other, and examples thereof include a woven structure such as a 2/1 structure, a 3/1 structure, and a 4/1 structure. In this way, with a woven structure with different yarn jumping amounts, the side on which more highly wear-resistant yarn is exposed is used as a sliding surface with the webbing insertion hole. The webbing 1 is high, wear is suppressed, and the durability is excellent.
The above-mentioned yarn jump amount means the amount that the warp yarn continuously jumps over the weft yarn and the amount that the weft yarn jumps continuously over the warp yarn. In other words, it means the number of wefts in which the warp is continuously flying over the weft, and the number of warps in which the weft is continuously flying over the warp.

  For example, the webbing 1 has a 3/1 twill weave structure as shown in FIG. 2 and a high wear resistance yarn and other yarns are alternately woven as warp yarns so that many high wear resistance yarns are exposed on one side. It can be. By using such a twill weave structure so that one surface side of the webbing 1 is a sliding surface side with the webbing insertion hole, the webbing 1 having high wear resistance and excellent durability can be obtained. it can. In this case, other yarns are also exposed more on one surface side of the webbing 1, which is not preferable from the viewpoint of wear resistance, but is less wear resistant than when a high wear-resistant yarn is not used as the warp. Can be improved.

  Also, as shown in FIG. 3 and FIG. 4, a configuration in which a 3/1 structure and a 1/3 structure are alternately provided, and one surface side on which more highly wear-resistant yarns are exposed is a sliding surface with a webbing insertion hole. By using it so as to be on the side, the webbing 1 having high wear resistance and excellent durability can be obtained. In the case of these forms, the other thread having relatively low wear does not slide on the other surface of the webbing 1, that is, when the seat belt is attached and released, on the peripheral surface of the webbing insertion hole of the through anchor 6. It will be exposed to many other surfaces, and the wear resistance of the webbing 1 will be further improved.

  In FIGS. 3 and 4, the 3/1 structure and the 1/3 structure are alternately provided, but the 2/1 structure and the 1/2 structure are alternately provided. It is also possible to adopt a combination of woven structures such as a form including four structures alternately and a form including 3/2 structures and 2/3 structures alternately. With such a combination of woven structures, the wear resistance is improved by using the one surface side where more highly wear-resistant yarns are exposed as the sliding surface side with the webbing insertion hole. High webbing 1 having excellent durability can be obtained.

  As described above, the combination of the woven structures is not particularly limited. For example, in the form in which the 2/1 structure and the 1/2 structure are alternately provided, there are many entanglement points between the warp and the weft, and the peripheral surface of the webbing insertion hole. This is advantageous from the viewpoint of reducing the sliding area and suppressing the wear of the webbing 1. On the other hand, at the entanglement point, a tensile force and a pressing force are applied to each of the warp and the weft, which is disadvantageous in terms of strength.

  Further, in the form having the 4/1 structure and the 1/4 structure alternately, there are few entanglement points between the warp and the weft, and the area that slides with the peripheral surface of the webbing insertion hole is increased. However, it is disadvantageous from the viewpoint of reducing wear. On the other hand, there are few entanglement points at which a tensile force and a pressing force are applied to the warp and weft, which is advantageous from the viewpoint of strength. Thus, 2/1 structure and 1/2 structure and 4/1 structure and 1/4 structure have advantages and disadvantages, and the combination of 3/1 structure and 1/3 structure is particularly preferable as the woven structure. .

  In addition, as the warp yarn, a high wear-resistant yarn and another yarn are alternately woven, and this alternate means that one high wear-resistant yarn and one yarn as shown in FIGS. The other yarns are alternately woven as warp yarns, and are not limited to alternating in a strict sense. For example, after a plurality of high wear-resistant yarns are woven as warp yarns with the same yarn jump amount, a plurality of other yarns may be woven as warp yarns with the same yarn jump amount. For example, as a warp, 2-3 high-abrasion resistant yarns are woven in a 3/1 structure and then 2 to 3 other yarns are woven in a 1/3 structure. May be.

  Furthermore, in the conventional webbing 1, the warp and weft yarns of the 2/2 twill weave structure, the 3/3 twill weave structure and the like are usually the same, particularly in the 2/2 twill weave structure (see FIG. 6). There are often. As described above, if the warp and weft skipping amounts are the same, even if high wear-resistant yarns and other yarns are alternately woven as warps, the same amount of high resistance to the one side and the other side is provided. The wearable yarn will be exposed, and the wear resistance of the webbing 1 due to the use of the high wear resistant yarn as the warp cannot be sufficiently improved.

(2) Overall length and width of webbing The overall length of the webbing 1 is not particularly limited, but is usually 2000 to 4000 mm and often 3000 to 3700 mm. If it is the length of this range, it is easy to wind up to the retractor 5, and is suitable. Further, the width of the webbing 1 is not particularly limited, and is usually 46 to 54 mm and often 48 to 52 mm. If it is the width | variety of this range, a seatbelt can be comfortably mounted | worn without giving a passenger | crew an unpleasant feeling.

(3) Fiber and material used for webbing The fiber used for manufacturing the webbing 1 is not particularly limited, and various known fibers can be widely used. As this fiber, a filament made of a synthetic resin is preferably used. There are multifilaments and monofilaments as filaments, but multifilaments are usually used. The material of the filament includes a material used as a high wear-resistant yarn and a material used as another yarn, and is not particularly limited as long as each yarn can be obtained. It is possible to use a filament made of, in particular, a multifilament.

  The synthetic resin is not particularly limited, and a synthetic resin that can be used as a high wear-resistant yarn and a synthetic resin that can be used as another yarn having relatively low wear properties are used. Examples of the synthetic resin include polyamide resins such as nylon 6 and nylon 66, polyester resins such as polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate, polyolefin resins such as polyacrylic resin, high-density polyethylene, and polypropylene. Resin etc. are mentioned.

  Furthermore, as a synthetic resin that can be used as a high abrasion resistance yarn, a polyamide-based resin and a polyethylene-based resin are preferable, and a polyamide-based resin is more preferable. On the other hand, a polyester resin is preferable as a synthetic resin for obtaining other yarns.

  In addition, although polyamide-based resins are excellent in abrasion resistance, they are not sufficiently light-resistant, so in particular from the viewpoint of light resistance, yarns using polyester resins having different physical properties as highly abrasion-resistant yarns and other yarns. Can also be used. For example, a high abrasion resistance yarn using a polyester resin having a relatively large tensile elongation and a high wear resistance, and another yarn using a polyester resin having a relatively small tensile elongation and a low abrasion resistance. Can also be used in combination.

  The fineness of the synthetic resin filament such as a multifilament is not particularly limited, and a multifilament having an appropriate fineness can be used. The fineness of the warp is preferably 500 to 3000 dtex, and more preferably 1500 to 1800 dtex. With the warp having such a fineness, the webbing 1 having a required strength in the length direction can be obtained. Furthermore, the fineness of the weft is preferably 250 to 1500 dtex, and more preferably 500 to 1000 dtex.

  In the case of a multifilament, the number of filaments constituting the multifilament is not particularly limited, and can be set according to the fineness and the like. In the warp, the number is preferably 45 to 300, more preferably 100 to 200. In the weft, the number is preferably 20 to 200, and more preferably 45 to 130.

The foregoing examples are for illustrative purposes only and are not to be construed as limiting the invention. Although the invention has been described with reference to exemplary embodiments, it is to be understood that the language used in the description and illustration of the invention is illustrative and exemplary rather than limiting. As detailed herein, changes may be made in its form within the scope of the appended claims without departing from the scope or spirit of the invention. Reference has been made herein to specific structures, materials, and examples of the invention, but the invention is not intended to be limited to the disclosure herein, but rather is within the scope of the appended claims. , Covering all functionally equivalent structures, methods and uses.
For reference, the specification includes the following [1] to [5] regarding the seat belt webbing.
[1] A belt-shaped webbing for a seat belt used by being inserted through a webbing insertion hole of a through anchor,
As the warp, high wear-resistant yarn made of a material with high wear resistance and other yarn made of material with low wear resistance compared to the high wear-resistant yarn are woven,
The warp has a woven structure with different yarn jumping amounts,
A seatbelt webbing characterized in that the high wear-resistant yarn is exposed more on the surface on the side that slides with the webbing insertion hole than on the other surface.
[2] The seatbelt webbing according to [1], wherein the high wear-resistant yarn and the other yarn are woven so that woven structures having different amounts of yarn skipping are alternately arranged.
[3] The seatbelt webbing according to [2], wherein the woven structure is a 3/1 structure and a 1/3 structure.
[4] The high wear-resistant yarn is a yarn made of a polyamide resin, and the other yarn is a yarn made of a polyester resin, according to any one of [1] to [3] Seat belt webbing.
[5] The high wear-resistant yarn and the other yarn are polyester yarns, and the high wear-resistant yarn is made of a polyester resin that has a higher tensile elongation and higher wear resistance than the other yarns. The webbing for seat belts according to any one of [1] to [3].

  The wear resistance of the through anchor with respect to the webbing insertion hole is high, and wear during pulling out and rewinding is suppressed, so that it can be widely used as a technique for a seat belt webbing with higher durability.

  DESCRIPTION OF SYMBOLS 1; Webbing for seat belts, 21; High abrasion resistance yarn, 22; Other yarn, 3 wefts, 4; Seat belt device, 5; Retractor, 6; Through anchor, 7; Anchor, 8; Buckle, A; sliding surface, B: other surface.

Claims (4)

It is a webbing for a belt-like seat belt used by being inserted through the webbing insertion hole of the through anchor,
As the warp, high wear-resistant yarn made of a material with high wear resistance and other yarn made of material with low wear resistance compared to the high wear-resistant yarn are woven,
The warp has a woven structure with different yarn jumping amounts,
The high wear-resistant yarn is exposed more on the surface that will slide with the webbing insertion hole than on the other surface ,
The webbing for a seat belt, wherein the high wear-resistant yarn and the other yarn are woven so that woven structures having different yarn jump amounts are alternately arranged . The webbing for a seat belt according to claim 1 , wherein the woven structure is a 3/1 structure and a 1/3 structure. The seatbelt webbing according to claim 1 or 2 , wherein the high wear-resistant yarn is a yarn made of a polyamide resin, and the other yarn is a yarn made of a polyester resin. The high-abrasion-resistant yarn and the other yarn are polyester yarns, and the high-abrasion-resistant yarn is made of a polyester resin having a higher tensile elongation and higher abrasion resistance than the other yarns. The webbing for seatbelts of 1 or 2 .

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