JP2018133264A - Interior material for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interior material for a vehicle, which has desired quality such as sufficient emission intensity and which can be inexpensively manufactured.SOLUTION: A vehicle interior material (e.g. seat belt webbing) of the present invention comprises a fabric body 2A in which warp 1A and weft 1B are woven. At least one of the warp 1A and the weft 1B, which constitute the fabric body 2A, includes a light transmission thread 1d capable of transmitting light. The fabric body 2A is provided with a coating layer 2B that is made of a material lower in refractive index than the light transmission thread 1d.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle interior material. More specifically, the present invention relates to a vehicle interior material provided with a light emitting function.

  Among vehicle interior materials, it is desirable that a predetermined part emits light when the interior of the vehicle is dark, so that the location thereof can be easily confirmed. For example, a three-point seat belt device that is a vehicle interior material includes a seat belt webbing that is inserted into a through anchor provided at an upper portion of a vehicle center pillar, and a tongue plate attached to the seat belt webbing serves as a buckle. Locked. Then, the three-point seat belt device is put into use by spanning the seat belt webbing from the passenger's shoulder to the chest and waist.

  In a three-point seat belt device, for example, even if the vehicle is parked in a dark place, the vehicle user (occupant) can easily check where the seat belt webbing (vehicle interior material) is located. It is convenient if you can. Therefore, the arrangement of the light emitting part on the seat belt webbing or the like has been studied.

  Specifically, for example, as a technique for providing a light emitting portion on a fabric such as a seat belt webbing, it has been proposed to use an optical fiber as a constituent fiber of the fabric (for example, see Patent Document 1). That is, a fabric including an optical fiber including a core and a clad as a constituent fiber has been proposed.

JP 2004-506106 A

However, even if the fabric described in Patent Document 1 described above is applied to a vehicle interior material, it is difficult to obtain a vehicle interior material of a desired quality, or there are problems in manufacturing the vehicle interior material. It occurs.
Specifically, for example, since it is difficult to reduce the fiber diameter of the optical fiber, the flexural rigidity of the woven fabric becomes high, and the texture tends to deteriorate. In addition, since the optical fiber is likely to cause unnecessary scratches during weaving or use, there is a possibility that the quality of the vehicle interior material may be deteriorated due to this unnecessary scratch or that sufficient light emission intensity may not be obtained. is there. Furthermore, when an optical fiber is used as a constituent material (constituent yarn) of a woven fabric, there is a possibility that a manufacturing problem of high cost may occur.

  The present invention has been made in view of the above circumstances, and by adopting a configuration in which a coating layer serving as a cladding is provided on a woven fabric body woven in a state including a light transmission yarn, sufficient light emission intensity can be obtained. An object of the present invention is to provide an interior material for a vehicle that can be manufactured at a low cost and has a desired quality.

In order to solve the above problem, the invention according to claim 1 is an interior material for a vehicle including a woven fabric body configured by weaving warps and wefts,
At least one of the warp and the weft constituting the woven fabric body includes a light transmission yarn capable of transmitting light,
The gist is that a coating layer made of a material having a refractive index lower than that of the light transmission yarn is provided on the fabric main body.

The invention according to claim 2 is the invention according to claim 1, wherein the vehicle interior material is a seat belt webbing,
The gist is to provide the light transmission yarn in a part of the warp.

The invention according to claim 3 is the invention according to claim 2, wherein the light transmission yarn is arranged along a longitudinal direction of the seat belt webbing,
The gist of the invention is that it comprises a light emitting means capable of emitting light toward one end of the light transmission yarn, and can control the light emission of the light emitting means and the stop of the light emission.

  The gist of the invention described in claim 4 is that, in the invention described in claim 2 or 3, the light transmission yarns are arranged on both ends in the lateral direction of the seat belt webbing.

  According to the vehicular interior material of the present invention, the light transmission yarn simulates the role of the core portion in a conventional core-sheath optical fiber, and the coating layer serves as the cladding portion. Therefore, the light incident on the light transmission yarn can be guided and the light can be leaked in the circumferential direction. The visibility and design of the vehicle interior material can be improved by the light emission thus obtained. Moreover, since it is not woven using the optical fiber (core-sheath structure optical fiber) as a component yarn conventionally, it is easy to suppress the bending rigidity of the obtained textile fabric, and it can improve the fabric texture. it can. Furthermore, since a coating layer is provided afterwards on the fabric body, the durability that has been a problem in fabrics using conventional optical fibers as constituent yarns (fabrics in which the optical fibers are exposed on the surface) The ease of scratching can be greatly improved and quality can be improved. In addition, the cost for manufacturing the vehicle interior material can be kept lower than when a conventional optical fiber is used.

  In addition, when the vehicle interior material is a seat belt webbing and a light transmission yarn is provided in a part of the warp, the visibility of the seat belt webbing is greatly improved by light emission, and the tip of the webbing is searched. The seat belt can be easily worn.

  Further, the light transmission yarn is disposed along the longitudinal direction of the seat belt webbing, and includes a light emitting means capable of emitting light toward one end of the light transmission yarn, and controls light emission of the light emission means and stop of light emission. When it is a possible form, the convenience of the seat belt webbing can be improved. In other words, when the vehicle is started to drive (for example, an engine key is inserted into the keyhole) or the vehicle is prepared to start driving (the occupant is seated in the vehicle seat), the light emitting means is driven. The seat belt webbing starts to emit light. On the other hand, if the driving of the vehicle is stopped or an operation for preparing to stop driving the vehicle is performed, the light emitting means stops driving, and the seat belt webbing stops emitting light. The stop of driving and the start / stop of driving of the light emitting means are linked, which is highly convenient.

  In addition, when the light transmission yarn is arranged at both ends in the lateral direction (width direction) of the seat belt webbing, the silhouette (particularly the width region) of the entire seat belt webbing is visually recognized (understood) by light emission. It is easy to improve the visibility of the seat belt webbing.

The present invention will be further described in the following detailed description with reference to the drawings referred to, with reference to non-limiting examples of exemplary embodiments according to the present invention. Similar parts are shown throughout the several figures.
It is a typical perspective view for demonstrating the structure of a seatbelt apparatus. It is a typical top view for demonstrating the structure of a seatbelt webbing. (A) is a typical partial top view of the woven structure of the textile main body of Example 1, (b) is a schematic diagram for demonstrating the XX cross section in FIG. 2, (c) is a figure. 2 is a schematic diagram for explaining a YY cross section in FIG.

  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.

  The vehicle interior material (1) according to the present embodiment is a vehicle interior material including a fabric body (2A) configured by weaving warps (1A) and wefts (1B), and includes a fabric body (2A). At least one of the warp yarn (1A) and the weft yarn (1B) constituting the light transmission yarn includes a light transmission yarn (1d) capable of transmitting light. And the coating layer (2B) comprised with the raw material with a refractive index lower than the refractive index of a light transmission thread | yarn (1d) is provided with respect to the textile main body (2A) (FIG. 1-1). (See FIG. 3).

  The fabric body (2A) is a fabric having a woven structure formed by weaving warp yarns (1A) and weft yarns (1B) as constituent yarns. The weaving structure is not particularly limited, and various weaving structures such as plain weave, twill weave and satin weave can be adopted.

The light transmission yarn (1d) may be included in at least one of the warp yarn (1A) and the weft yarn (1B). In particular, when the vehicle interior material is a belt-like seat belt webbing, it is preferable that the light transmission yarn is included in the warp from the viewpoint of weaving.
For example, a monofilament or a multifilament can be used as the light transmission yarn (1d).
As a specific material for the light transmission yarn (1d), it is preferable to use a resin having high transparency and low light transmission loss. For example, PMMA (polymethyl metal acrylate), PET (polyethylene terephthalate), acrylic, polycarbonate and the like can be exemplified. However, the refractive index of the light transmission yarn (1d) is higher than the refractive index of the material constituting the coating layer (2B).

  In the light transmission yarn (1d), the warp yarn (1A) and the weft yarn (1B) may be the same yarn or different yarns. Moreover, only 1 type may be sufficient as the light transmission yarn used for a warp, and 2 or more types may be used together. Similarly, only one type of light transmission yarn used for the weft may be used, or two or more types may be used in combination.

  The fineness of the light transmission yarn (1d) is not particularly limited, but is preferably 100 dtex or more and 1000 dtex or less, more preferably 200 dtex or more and 700 dtex or less, and further preferably 300 dtex or more and 500 dtex or less.

  Moreover, the range which arrange | positions the light transmission thread | yarn (1d) in a textile main body (fabric) (2A) can be variously selected according to the kind and application of a vehicle interior material (1).

Further, as the constituent yarn other than the light transmission yarn [that is, the non-light transmission yarn (1c, 1e) that cannot transmit light], for example, a monofilament or a multifilament can be used.
The specific configuration of the non-light transmission yarn (1c, 1e) is not particularly limited, and a general component yarn other than the above-described light transmission yarn can be used. For example, plant and animal natural fibers, regenerated fibers such as rayon, semi-synthetic fibers such as acetate, synthetic fibers made of synthetic resins, and the like can be used.
Examples of the resin constituting the synthetic fiber include polyamide resins such as nylon 6 and nylon 66, polyester resins such as polybutylene terephthalate and polytrimethylene terephthalate, polyolefin resins such as high-density polyethylene and polypropylene, and the like. .

  In the non-light transmission yarn (1c, 1e), the warp yarn (1A) and the weft yarn (1B) may be the same yarn or different yarns. Moreover, only 1 type may be sufficient as the component yarn (non-light transmission yarn) used for a warp, and 2 or more types may be used together. Similarly, only one type of constituent yarn (non-light transmission yarn) used for the weft may be used, or two or more types may be used in combination.

  The fineness of the non-light transmission yarn (1c, 1e) is not particularly limited, but is preferably 100 dtex or more and 1000 dtex or less, more preferably 200 dtex or more and 700 dtex or less, and further preferably 300 dtex or more and 500 dtex or less.

As a material which comprises the said coating layer (2B), a fluororesin, urethane etc. can be illustrated, for example. However, the refractive index of this material is lower than that of the light transmission yarn (1d).
In addition, the coating method with respect to a textile main body is not specifically limited, A well-known method is applicable. For example, a dipping method, a spray method, a knife coating method, a roll coating method and the like can be exemplified.

  In the vehicle interior material (1) according to the present embodiment, the light transmission yarn (1d) is woven into a part of the constituent yarn (particularly, when the present invention is applied to the seat belt webbing). The woven fabric body (2A) is coated with a material having a refractive index lower than that of the light transmission yarn (1d) (hereinafter referred to as coating resin). In other words, the prefabricated woven fabric body (2A) is subsequently coated with a coating resin to form a coating layer (2B), thereby obtaining a pseudo configuration similar to that of an optical fiber. That is, the light transmission yarn (1d) plays the role of the core portion of the conventional optical fiber, and the coating layer (coating resin) (2B) having a refractive index lower than that of the light transmission yarn (1d) is the clad portion of the conventional optical fiber. Have a role.

  Therefore, it is possible to guide the light incident on the light transmission yarn (1d) and to leak the light in the circumferential direction. And the visibility and designability of the vehicle interior material (1) can be improved by the light emission thus obtained. Moreover, since it is not woven using the optical fiber (core-sheath structure optical fiber) as a component yarn conventionally, it is easy to suppress the bending rigidity of the obtained textile fabric, and it can improve the fabric texture. it can. Furthermore, since the coating layer (2B) is provided after the fabric main body (2A), there is a problem in a fabric using a conventional optical fiber as a constituent yarn (a fabric in which the optical fiber is exposed on the surface). The durability and the ease of being damaged can be greatly improved, and the quality can be improved. Moreover, the cost concerning manufacture of the vehicle interior material (1) can be suppressed lower than the case where the conventional optical fiber is used.

  Examples of the vehicle interior material according to the present embodiment include a seat belt webbing (1), and a mode in which a light transmission yarn (1d) is provided on a part of the warp yarn (1A) (FIGS. 1 to 1). 3). Thereby, the visibility of the seat belt webbing is greatly improved by light emission, and the occupant can easily wear the seat belt without searching for the tip of the webbing.

  In the case of the above-described embodiment, for example, the light transmission yarn (1d) is disposed along the longitudinal direction of the seat belt webbing, and the light emission capable of emitting light toward one end (1L) of the light transmission yarn (1d). Means (8) may be provided, and light emission of the light emission means (8) and stoppage of light emission can be controlled. Thereby, the convenience of seatbelt webbing can be improved. In other words, when the vehicle is started to drive (for example, an engine key is inserted into the keyhole) or the vehicle is prepared to start driving (the occupant is seated in the vehicle seat), the light emitting means is driven. The seat belt webbing starts to emit light. On the other hand, if the driving of the vehicle is stopped or an operation for preparing to stop driving the vehicle is performed, the light emitting means stops driving, and the seat belt webbing stops emitting light. The driving stop and the driving start / stop of the light emitting means are interlocked, and convenience can be improved.

  Moreover, in the case of the above-mentioned form, the light transmission thread | yarn (1d) shall be arrange | positioned at the both ends in the transversal direction of a seatbelt webbing, for example. Thereby, it is easy to visually recognize (understand) the silhouette (particularly the width region) of the entire seat belt webbing by light emission, and the visibility of the seat belt webbing can be further improved.

  In addition, the code | symbol in the parenthesis of each structure described in the said embodiment shows the correspondence with the specific structure as described in the Example mentioned later.

  Hereinafter, the present invention will be specifically described with reference to the drawings. In this embodiment, a three-point seat belt device is exemplified as the “vehicle interior material” according to the present invention.

[1] Example 1
In the first embodiment, a specific example in which the present invention is applied to a seat belt webbing of a three-point seat belt device will be described with reference to FIGS.
The three-point seat belt device S according to the first embodiment includes a seat belt webbing 1 as shown in FIG. In other words, in the seat belt device S, one end of the webbing 1 is attached to the retractor 5 disposed at the lower portion of the pillar of the body panel provided in the vehicle. When the three-point seat belt device S is used (when the occupant wears the webbing 1), the webbing 1 is pulled out from the retractor 5.

  The webbing 1 is inserted into a webbing insertion hole 7a of a through anchor 7 disposed at the upper part of the pillar of the body panel, and one surface side of the webbing 1 is slid with the peripheral surface of the webbing insertion hole 7a. The other end of the webbing 1 is attached to a through anchor 9 disposed on the body panel side of the vehicle seat. Further, a tongue plate 11 is fitted in an intermediate portion in the length direction of the webbing 1. When the seat belt is worn, the tongue plate 11 is locked to the buckle 13. On the other hand, when the webbing 1 is released, the tongue plate 11 is detached from the buckle 13, and the webbing 1 is rewound to a position where the tongue plate 11 is close to the through anchor 7.

  As shown in FIGS. 2 and 3, the webbing 1 includes a fabric body 2A configured by weaving warp 1A and weft 1B, and a coating layer 2B coated on the fabric body 2A. . The fabric body 2A is a fabric having a woven structure formed by weaving warp 1A and weft 1B. That is, the warp 1A is woven along the longitudinal direction of the webbing 1, and the weft 1B is woven along the width direction of the webbing 1.

  Here, FIG. 3A is a plan view showing the surface of the woven fabric body 2A (the surface with the surface facing up in the drawing), and the portion where the warp 1A and the weft 1B intersect (substantially a cross shape). In (Part), the weft 1B dives below the warp 1A, or the warp 1A dives below the weft 1B. Then, as shown in FIG. 3B (schematic diagram showing a cross section perpendicular to the longitudinal direction of the webbing 1), the warp 1A has a constant interval in the short direction (short direction of the webbing 1), etc. A plurality are arranged at intervals. Further, the weft 1B is arranged so as to draw a path that swells between the warps 1A (draws a corrugated path). Further, as shown in FIG. 3C (a schematic diagram showing a cross section perpendicular to the short direction of the webbing 1), the wefts 1B are arranged at equal intervals in the longitudinal direction of the webbing 1. Furthermore, the warp 1A is arranged so as to sway between the wefts 1B (with a wave-shaped path). Thus, 2 A of textile main bodies are equipped with a clamp (bending part) in the part which warp 1A and weft 1B cross | intersect. However, the mode of the woven structure of the woven fabric body 2A is not particularly limited, and various woven structures such as a plain weave, a twill weave, and a satin weave can be employed.

2 and 3A, the warp 1A includes a non-light transmission yarn 1c that cannot transmit light and a light transmission yarn 1d that can transmit light, and the weft 1B cannot transmit light. Only the non-light transmission yarn 1e is provided. However, the warp 1A may be composed only of a non-light transmission yarn, the weft 1B may be composed of a non-light transmission yarn and a light transmission yarn, and the warp 1A and the weft 1B are respectively a non-light transmission yarn and a light transmission yarn. You may be comprised with a thread | yarn.
Here, among the warps 1A illustrated in FIG. 3A, the warp 1A that is not hatched is the non-light transmission yarn 1c, and the warp 1A that is hatched is the light transmission yarn 1d. In addition, since the weft 1B includes only the non-light transmission yarn 1e, the weft 1B is not hatched.

  As shown in FIG. 2, in the woven fabric body (fabric) 2A, three of the parts (parts of 5 mm or more from one end) inside the warp 1A (1c) on the one end 1f side in the short side direction (width direction) 1A (a1 to a3) of warp and three warp yarns 1A (a4 to a6) on the inner side of the warp 1A (1c) on the other end 1g side in the short side direction (5 mm or more from the other end) ) Is the light transmission yarn 1d, and the remaining warp 1A is the non-light transmission yarn 1c.

  In the woven fabric body (fabric) 2A of Example 1, as shown in FIG. 2, the warp 1A constituting the one end 1f (one end edge) side in the short direction is defined as a non-light transmission yarn 1c, and the non-light transmission yarn 1c. Three warp yarns 1A adjacent to each other (three warp yarns a1 to a3 adjacent in the direction of the other end 1g) are referred to as light transmission yarns 1d. Further, the warp 1A constituting the other end 1g (other end edge) side in the short direction is a non-light transmission yarn 1c, and three warps 1A adjacent to the non-light transmission yarn 1c (adjacent to the one end 1f direction). The matching three warps a4 to a6) are set as the light transmission yarn 1d. In other words, the warp yarn 1A made of the light transmission yarn 1d is arranged so as to be continuously adjacent to each other at both end portions 1f and 1g in the lateral direction in the fabric main body (fabric) 2A.

  Moreover, in the woven fabric body (fabric) 2A of Example 1, when the width in the short side direction (width direction) is “d”, for example, the one end 1f (one end edge) side and the other end 1g (the other end edge) The warp yarn 1A constituting the position in the range of “d / 16” to “2d / 16” from each of the) side can be used as the light transmission yarn 1d. In addition, the range which makes warp 1A light transmission yarn 1d is not limited to this, For example, it is "d / 32" from each of the one end 1f (one end edge) side and the other end 1g (other end edge) side. To “2d / 32” (narrower range), or “d / 32” to “5d / 32” (wider range).

  Further, in the first embodiment, the light transmission yarn 1d is disposed at a portion near the end portion (the most end portion along the short direction) of the webbing 1 in the short direction. In the present embodiment, in order to improve the visibility of the webbing 1, it is easier to grasp the silhouette of the entire webbing 1 when the part near the both ends in the width direction is shining. It is supposed to emit light in the vicinity. On the other hand, from the viewpoint of visibility, the central portion in the width direction of the webbing 1 does not need to emit light so much, so the light transmission yarn 1d is disposed at a position excluding the central portion in the width direction of the webbing 1.

  Moreover, since both end portions (edge portions) in the short direction of the webbing 1 are portions that easily slide when the seat belt is used, it is better to place the light transmission yarn 1d while avoiding the portions. preferable. In the first embodiment, for this reason, the light transmission yarn is arranged at a position where the width region of the webbing 1 is easy to visually recognize (understand) and hardly causes inconvenience in use.

  In Example 1, a coating layer 2B (thin film) is formed on the woven fabric body 2A by coating a material (fluororesin, urethane, etc.) having a refractive index lower than that of the light transmission yarn 1d. That is, the coating layer 2B made of a material having a refractive index lower than that of the light transmission yarn 1d is formed on the fabric body 2A.

That is, in Example 1, the coating layer 2B is provided over the entire front and back surfaces of the fabric main body 2A including the light transmission yarn 1d, so that a configuration similar to that of the optical fiber is constructed in a pseudo manner. Specifically, as shown in FIGS. 3B and 3C, in the webbing 1, the light transmission yarn 1d plays the role of the core part in the optical fiber having the conventional core-sheath structure. The coating layer 2B plays the role of the cladding part in the optical fiber.
In the drawing, the coating layer 2B is shown to be thicker than the actual thickness, but the film thickness of the coating layer 2B is usually 5 mm or less (particularly 1 mm or less), for example.

  Further, as shown in FIG. 2, light emitting means 8 (for example, for making light incident on the light transmission yarn 1 d) at a position on one end 1 </ b> L in the longitudinal direction of the webbing 1 and facing the light transmission yarn 1 d (for example, LED device) is arranged. That is, the light emitting means 8 is disposed at one end portion (that is, the end portion accommodated in the retractor 5) 1L in the longitudinal direction of the fabric body 2, and light is emitted from the light emitting means 8 toward the end portion 1L of the fabric body 2A. Can be incident. The light emitting means 8 is connected to an engine control unit (ECU) or the like (not shown) via a wire harness or the like (not shown).

  For example, when the engine key is inserted into the key hole or the engine key is operated to start the engine (for example, the engine key is twisted in a predetermined direction), the light emitting means 8 starts to emit light. Thereby, the light incident from one end 1L along the longitudinal width direction of the fabric body 2 is guided toward the other end 1R in the longitudinal direction of the fabric body 2.

  That is, since the coating layer 2B formed of a material having a refractive index lower than that of the constituent material of the light transmission yarn 1d is provided on the fabric main body 2A, the portion of the light transmission yarn 1d is the same as the core portion of the optical fiber. Most of the light incident from the light emitting means 8 is guided in the longitudinal direction of the webbing 1 (the direction from the one end 1L toward the other end 1R). As described above, since the fabric body 2A includes the clamp (bend), a part of the light guided in the longitudinal direction of the light transmission yarn 1d leaks to the surroundings, and sufficient light emission intensity is obtained. With this light emission, the visibility of the webbing 1 can be improved in Example 1.

  Further, for example, the light emitting means 8 stops light emission by removing the engine key from the keyhole or performing an operation for stopping the driving of the engine (for example, twisting the engine key in a direction opposite to a predetermined direction). As a result, the light emission of the light emitting means 8 is stopped, and the webbing 1 does not emit light. As described above, in the first embodiment, when the engine is driven or when an operation for preparing to start driving is performed on the engine, the light emitting unit 8 starts driving, and the webbing 1 emits light. Further, when the engine drive is stopped or an operation for preparing for the engine drive stop is performed, the light emitting means 8 stops driving and the webbing 1 stops emitting light. As described above, in the first embodiment, the drive start / drive stop of the vehicle (engine) and the drive start / drive stop of the light emitting means 8 are interlocked, and the convenience is high. That is, it is possible to control when the webbing 1 is shining and when the webbing 1 is not shining through the drive control of the light emitting means 8.

  According to Example 1, the warp yarn 1A including the light transmission yarn 1d and the weft yarn 1B are woven to form the fabric body 2A, and then the entire fabric body 2A is coated with fluororesin or urethane, A coating layer 2B is provided on 2A. That is, the woven fabric body 2A is not composed of an optical fiber (core-sheath structure) provided with a core and a clad, but uses a warp 1A and a weft 1B including a light transmission yarn corresponding to the core (light transmission yarn not provided with a clad) as a constituent yarn. After weaving, a coating layer 2B corresponding to the cladding is provided on the entire fabric body 2A.

  As described above, the webbing 1 of the first embodiment includes a constituent part (a constituent part that operates in the same manner as an optical fiber) including a core and a clad in a pseudo manner, and guides light incident on the constituent part. Light can be leaked by this component. For this reason, the visibility of the webbing 1 can be improved by making the said structural part light-emit. Further, since weaving is not performed using an optical fiber (core-sheath optical fiber), it is easy to suppress the bending rigidity of the woven fabric, and the texture can be improved.

  The seat belt device S is continuously used in a harsh situation. However, if the webbing 1 is woven using a core-sheath type optical fiber as a constituent yarn, it is difficult to satisfy the scratch resistance of the webbing 1. There is a risk of becoming. On the other hand, if it is attempted to increase the wear resistance of the constituent yarn of the webbing 1 that is used severely (for example, if the thickness of the sheath is increased), there is a possibility that the woven fabric cannot be successfully woven using the constituent yarn. Come. On the other hand, in Example 1, the woven fabric body 2A is woven using the light transmission yarn 1d without a sheath as a constituent yarn, and the coating layer 2A is formed after the weaving, so that it is similar to an optical fiber in a pseudo manner. Get the configuration. And after weaving, by increasing the thickness of the coating layer 2A formed later, even if the seat belt webbing is continuously used in a severe situation, it is difficult to be damaged. For this reason, according to Example 1, the visibility of webbing 1 can be improved and wearing of a seat belt can also be urged. Furthermore, since an optical fiber is not used for the constituent yarn, it is advantageous in terms of cost. As described above, in Example 1, since the conventional core-sheath structure optical fiber is not used, restrictions on accuracy, material, and the like can be eliminated in manufacturing the webbing 1 (vehicle interior material).

In the present invention, the present invention is not limited to the above-described embodiment, and various modified embodiments can be exemplified within the scope of the present invention depending on the purpose and application.
For example, the light transmission yarn 1d does not necessarily need to be colorless and transparent, and can be colored and transparent to improve the design of the vehicle interior material. That is, in the embodiment in which one of the warp 1A and the weft 1B includes the light transmission yarn 1d as in the above embodiment, the other of the warp 1A and the weft 1B (the yarn not including the light transmission yarn 1d) is colored. The design of the vehicle interior material may be improved. Furthermore, by mixing an inorganic substance (talc, viscosity, etc.) into the coating layer 2B, irregular reflection may be caused by the inorganic substance to improve the light emission intensity.

  Further, an arrangement mode different from that of the first embodiment can be selected as an arrangement mode of the light transmission yarn 1d and the non-light transmission yarn 1c constituting the warp 1A. For example, as an arrangement mode of the light transmission yarn 1d and the non-light transmission yarn 1c, a mode in which the light transmission yarn 1d and the non-light transmission yarn 1c are alternately arranged, both end portions 1f in the short direction of the fabric body (fabric) 2A Examples include an arrangement mode in which only one light transmission yarn 1d is arranged on the 1g side, an arrangement mode in which the entire warp 1A constituting the woven fabric body (fabric) 2A is the light transmission yarn 1d, and the like.

Further, the seat belt device has been described in the first embodiment. However, as another means for improving the visibility of the seat belt device in a dark place (means different from the present invention), a vehicle door is opened or an engine key is used. It is also possible to lift the tongue plate 11 or emit light when it is inserted into the key hole. However, as in the first embodiment, it is desirable that the webbing 1 that is easily spotted by the occupant emits light to improve its visibility.
Further, in the above embodiment, the warp 1A and the weft 1B are woven and light is emitted by light leakage by providing a clamp on the fabric body 2A. However, by providing “scratches” on the peripheral surface of the coating layer 2B, etc. Light leakage may be performed.

  Further, in the first embodiment, the webbing 1 applied to the seat belt apparatus has been described. However, the configuration including the above-described woven fabric body 2A and the coating layer 2B is used as a vehicle interior material other than the webbing 1 (for example, a vehicle seat). It can also be applied to vehicle seat covers and the like. And in the interior material for vehicles which intends the improvement of the designability by light emission, in a textile main part (2A), it is in a wider range (for example, the range of 50 to 90% or the whole area along a transversal direction and a longitudinal direction). A mode in which the light transmission yarn is arranged can also be exemplified.

  The foregoing description is for illustrative purposes only and is 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 restrictive. 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. Although specific structures, materials and embodiments have been referred to in the detailed description of the invention herein, it is not intended that the invention be limited to the disclosure herein, but rather the invention will be claimed. It covers all functionally equivalent structures, methods and uses within the scope.

  The present invention is not limited to the embodiments described in detail above, and various modifications or changes can be made within the scope of the claims of the present invention.

  The vehicle interior material of the present invention can be suitably used in fields related to fabrics such as seat belt webbing and skin material in various vehicles (such as automobiles and railway vehicles).

  1; webbing, 1A; warp, 1B weft, 1c; non-light transmission yarn, 1d; light transmission yarn, 1e; non-light transmission yarn, 2A; woven fabric body, 2B; coating layer, 5; retractor, 7; , 8; light emitting means, 9; anchor, 11; tongue plate, 13; buckle, S;

Claims (4)

An interior material for a vehicle having a woven fabric body composed of warps and wefts woven,
At least one of the warp and the weft constituting the woven fabric body includes a light transmission yarn capable of transmitting light,
An interior material for a vehicle, wherein a coating layer made of a material having a refractive index lower than that of the light transmission yarn is provided on the textile main body. The vehicle interior material is a seat belt webbing,
The vehicle interior material according to claim 1, wherein the light transmission yarn is provided in a part of the warp. The light transmission yarn is disposed along the longitudinal direction of the seat belt webbing,
The vehicle interior material according to claim 2, further comprising a light emitting unit capable of emitting light toward one end of the light transmission yarn, wherein the light emission of the light emitting unit and the stop of the light emission can be controlled.   The vehicle interior material according to claim 2 or 3, wherein the light transmission yarn is disposed on both ends in the lateral direction of the seat belt webbing.

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