JP5471378B2 - Skin material for vehicle interior parts - Google Patents

Description

The present invention relates to a cloth material that includes a conductive wire that can be energized (for example, a conductive wire that can generate heat when energized) and is used as a skin material of a vehicle interior .

As a member provided with this type of conductive wire, the heating element of Patent Document 1 is known. The heating element includes a flat carrier, a linear conductive wire, and an energizing means that can supply power to the conductive wire. And in a well-known technique, after arrange | positioning a some conductive wire in parallel to a support body, the parallel circuit of a some conductive wire is formed in a heat generating body by electrically connecting in parallel with a pair of electricity supply means.
A known heating element can be used as a heater for a vehicle seat, for example. At this time, the heating element (a heating element separate from the seat structure) is disposed inside the vehicle seat (between the skin material and the cushioning material) in consideration of the stretchability of the seat and durability during use. Often.

By the way, the skin material of the vehicle seat is a member that covers the cushion material forming the outer shape of the seat. A general skin material has a surface material that constitutes a design surface and a pad material disposed on the back surface of the surface material in consideration of the seating ability of the occupant, and the surface material and the pad material are laminated. It is integrated by the joining method.
As the pad material, a porous pad material (such as a urethane pad having a high air content) is typically used. However, since the porous pad material is excellent in heat insulation, it takes time to heat up the sheet and power consumption increases in the above-described configuration (configuration in which a heating element is disposed on the back side of the skin material). There was something to do.

Therefore, Patent Document 2 discloses a woven fabric (an example of a surface material) using a conductive wire as part of a warp or a weft. Examples of the conductive wire include metal, alloy, conductive plastic lead and carbon fiber.
In the technique of Patent Document 2, it is possible to improve the temperature rise property of the sheet and the power consumption (heater performance improvement) by causing the surface material itself to generate heat.

Special table 2007-528579 gazette JP 2007-227384 A

However, the conventional conductive wire is inferior in durability, and is somewhat unsuitable for use as a structure of a surface material. That is, metal, alloy, and plastic lead wires are inferior in tensile strength and tensile elasticity. Carbon fibers are brittle to shear forces and friction in the direction perpendicular to the fiber axis, and are bent and broken by pressing and wrinkling during seating.
For this reason, in the technique of Patent Document 2, when the occupant comes into contact with the conductive wire exposed on the seating side, fraying due to bending of the conductive wire or disconnection due to wear occurs, and the heater function or the like of the skin material is reduced or lost. I was sometimes broken. In addition, the breakage and wear of the conductive wire material may cause deterioration in the surface design of the skin material and deterioration of seating property (seat characteristics are deteriorated), and it has not been a configuration that can be easily adopted as a skin material for a vehicle seat.
The present invention was devised in view of the above points, and the problem to be solved by the present invention is that the conductive wire material can be used as a skin material without adversely affecting the sheet characteristics and the like. It is to install well.

As a means for solving the above problems, the fabric material of the first invention, the fabric material der pad material on one side of the surface material are laminated is, is used as a skin material of a vehicle interior equipment. The cloth material includes a conductive wire material that can be energized and an energizing means that can supply power to the conductive wire material, and can be used as a skin material of a vehicle seat, for example. In this type of cloth material, it is desirable to attach the conductive wire with good performance without adversely affecting the sheet characteristics and the like.

Therefore, in the present invention, a layered structure is provided on the fabric as the surface material. In the overlapped tissue portion, the first tissue portion is disposed on one surface side (side facing the pad material), and the second tissue portion is disposed on the other surface side different from the one surface. A structure in which the conductive wire is not exposed as much as possible to the second tissue part (generally on the seating side of the surface material) by forming the overlapped tissue part in a bag weave and forming part or all of the first structure part with a conductive wire. It was.
And the skin material of 1st invention is a skin material of the vehicle interior goods formed by couple | bonding several skin pieces, and has the 1st skin piece as several skin pieces. The first skin piece is made of the above-mentioned cloth material. In this type of structure, it is preferable that the energizing means and the conductive wire can be electrically connected by a relatively simple operation.
Therefore, in the present invention, a tissue portion is formed in the center portion of the first skin piece. And in the 1st skin piece terminal part, it was set as the structure which replaces the above-mentioned conductive wire material from a 1st structure | tissue part to a 2nd structure | tissue part, and is electrically connected to an electricity supply means. In this way, by arranging the conductive wire in the second tissue part (the conductive wire is placed on the other side of the skin material without the pad material, etc.), the energizing means and the conductive wire can be electrically connected without the need to remove the pad material, etc. Can be connected.

  A cloth material according to a second invention is the cloth material according to the first invention, wherein the conductive wire includes a core yarn made of carbon fiber (for example, a bundle made of a plurality of carbon fiber filaments) and the core yarn. It has a twisted sheath yarn and is configured to have excellent durability.

According to the first aspect of the present invention, the conductive wire can be attached to the cloth material that can be used as the skin material with good performance without adversely affecting the sheet characteristics and the like as much as possible. And according to 1st invention, an electricity supply means and a conductive wire can be attached with sufficient performance comparatively easily. According to the second invention, the heater function and the like can be suitably maintained by improving the durability of the conductive wire.

It is a perspective view of a vehicle seat. It is a partially transparent front view of a skin material back surface. It is a side view of a conductive wire. It is a figure which shows the manufacturing process of a skin piece, (a) is a front view of the raw material of a surface material, (b) is a front view of the cloth material of a skin piece shape, (c) is a skin material It is a front view of a piece. It is a partial longitudinal cross-sectional view of a skin material (center). It is a partial longitudinal cross-sectional view of a skin material (terminal side). (A) is an organization chart of the second organization part (front organization), (b) is an organization chart of the first organization part (back organization), and (c) is an organization chart in which the front and back organizations are entered. It is. It is a front view of the side part of a skin material back surface. It is a longitudinal cross-sectional view of a part of the seat cushion. It is a partially transparent front view of the skin material surface of another example. It is a partial longitudinal cross-sectional view of the skin material (center) of another example. It is a partial longitudinal cross-sectional view of the skin material (terminal side) of another example.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. 2, 4, and 10, the pad material and the back base fabric are not shown for convenience.
In each figure, reference numeral F is attached to the front of the vehicle seat, reference numeral B is attached to the rear of the vehicle seat, reference numeral L is attached to the side of the vehicle seat, reference sign UP is provided above the vehicle seat, and reference sign DW is provided below the vehicle seat. . In addition, in each figure, a code | symbol may be attached | subjected only to some conductive wires for convenience.

<Embodiment 1>
A vehicle seat 2 in FIG. 1 includes a seat cushion 4, a seat back 6, and a headrest 8. Each of these members has a cushion material (4P, 6P, 8P) that forms the outer shape of the seat, and a skin material (4S, 6S, 8S) that covers the cushion material (see FIGS. 1 and 9). As a typical cushioning material, for example, polyurethane foam (density: 10 kg / m ^{3 to} 60 kg / m ³ ) can be used.
And in this embodiment, the skin material 4S of the seat cushion 4 is comprised with the cloth material 10 (it mentions later for details). The conductive material 20 and the energizing means 18 (both will be described in detail later) are attached to the cloth material 10. At this time, it is preferable to attach the conductive wire 20 with good performance (see FIG. 2). Therefore, in this embodiment, the conductive wire 20 is attached to the cloth material 10 with good performance without adversely affecting the sheet characteristics as much as possible.

[Skin material]
The skin material 4S is a bag-like member produced by combining a plurality of skin pieces (for example, the first skin piece 40f and the second skin piece 40s) (see FIGS. 1 and 2).
The first skin piece 40f is a substantially rectangular (front view) member corresponding to the seat surface shape of the seat. The second skin piece 40s is a member having a shape that can be coupled to the first skin piece 40f, and can be formed of, for example, a fabric (woven fabric, knitted fabric, nonwoven fabric, or a composite thereof) or leather.
In the present embodiment, the first skin piece 40f is composed of the cloth material 10 (described later), and the conductive wire 20 is energized by the energizing means 18, thereby serving as an electrode or heater for the capacitive sensor. Can function. Hereinafter, each configuration will be described in detail.

[Fabric]
The cloth material 10 has a basic configuration (a front material 12, a pad material 14, and a back base cloth 16), a conductive wire material 20, and an energization means 18 (see FIGS. 2 and 9). Here, the surface material 12 is a member constituting the seating side (design surface) of the surface material 4S (see FIG. 4). The surface material 12 of the present embodiment is a woven fabric made of the conductive wire material 20 and another wire material, and has a layered structure portion (12a, 12b) (details of each member will be described later).
The pad material 14 is a porous member having flexibility, and is preferably a member more flexible than the cushion material 4P. As the pad material 14, for example, a urethane pad having a high moisture content or a slab urethane foam made of a soft urethane foam can be used. And the back base fabric 16 is a member which comprises the back side (side different from the design surface side) of the fabric material 10, for example, can be comprised by a knitted fabric or a nonwoven fabric.

[Conductive wire]
The conductive wire 20 is a linear member that can be energized, and examples thereof include conductive yarns such as metals and alloys, metal or alloy plating yarns (insulating fibers having a plating layer), carbon fibers, and carbon fiber covering yarns. Yes (see FIGS. 2 and 3).
Among them, the covering yarn of carbon fiber has less influence on the sitting comfort and is superior in durability to general carbon fiber, and therefore is preferably used as the conductive wire 20 of the present embodiment.

(Carbon fiber covering yarn)
Here, the carbon fiber covering yarn preferably includes a core yarn 22 made of carbon fiber (for example, a bundle made of a plurality of carbon fiber filaments) and a sheath yarn 24 twisted around the core yarn 22 (FIG. 3). See). The number of carbon fibers (number of filaments) in the core yarn 22 is not particularly limited, but it is typically desirable that the number is two or more.
Then, by covering the core yarn 22 of the carbon fiber with the sheath yarn 24, it is possible to prevent or reduce the stress at the time of sitting (shearing force or compressive force in the direction perpendicular to the fiber axis) from being concentrated on the specific carbon fiber. Thus, by improving the durability of the conductive wire 20, it is possible to prevent or reduce disconnection due to pressing or friction during sitting. Further, by strengthening the conductive wire 20 by covering, it is possible to run the conductive wire 20 while bending the guide wire 20 while bending it between the guides or to move it up and down with a scissors (overlapping structure portion). Is easy to produce).

(Carbon fiber)
Examples of the carbon fibers include polyacrylonitrile-based carbon fibers (PAN-based carbon fibers) and pitch-based carbon fiber filaments (see FIG. 3).
The PAN-based carbon fiber is a fiber obtained by carbonizing and baking polyacrylonitrile (PAN), and examples thereof include flame-resistant fiber, carbonized fiber, and graphitized fiber. The pitch-based carbon fiber is a fiber obtained by carbonizing and firing petroleum pitch or coal pitch, and examples thereof include infusible fiber, carbonized fiber, and graphite fiber. Among these, carbon fibers (carbonized fibers, graphitized fibers, graphite fibers) having a firing temperature of 1000 ° C. or higher have good electrical conductivity, and are therefore preferably used as the carbon fibers of this embodiment.

(Scabbard thread)
Examples of the sheath yarn 24 include animal-based or plant-based natural fibers, synthetic fibers, or filaments of these blended fibers (see FIG. 3).
Examples of synthetic fibers include polyester fibers, polyamide fibers, polyvinyl alcohol fibers, cellulose fibers, and filaments of these mixed fibers. Among them, filaments of polyester fibers (polyethylene terephthalate, polybutylene terephthalate, polytriethylene terephthalate, polylactic acid, etc.) and polyamide fibers (nylon 6, nylon 66, etc.) have excellent durability during use. The sheath yarn 24 can be suitably used.

Here, the number of sheath yarns 24 in the conductive wire 20 is not particularly limited, but is preferably 1 (single covering) or 2 (double covering).
By performing the single covering, it is possible to suitably ensure the exposure of the core yarn 22 (contact with the energizing means 18) (see FIGS. 2 and 3). On the other hand, the durability of the conductive wire 20 can be improved by double covering. The twist direction of the sheath yarn 24 may be either S twist or Z twist.

The number of twists of the sheath yarn 24 is appropriately set depending on the thickness (fineness) of the carbon fiber or the sheath yarn 24, the number of filaments of the sheath yarn 24 (single covering, double covering), and the like.
For example, in the case of single covering, desired durability can be imparted to the conductive wire 20 by setting the number of twists of the sheath yarn 24 to 20 to 1000 T / m. Here, when the number of twists of the sheath yarn 24 is less than 20 T / m, the durability of the desired conductive wire 20 tends not to be obtained. On the other hand, when the number of twists of the sheath yarn 24 is more than 1000 T / m, the exposed area of the core yarn 22 (carbon fiber) is reduced, and contact with the energizing means 18 described later may be hindered. And it can be set as the electrically conductive wire 20 provided with desired durability and contact property by setting the twist number of the sheath yarn 24 to 150-500 T / m.

[Other wire rods]
Examples of other wire materials (21a to 21d, 22u, etc.) include plant-based and animal-based natural fibers, chemical fibers made of a thermoplastic resin or a thermosetting resin, and mixed fibers thereof (Fig. 5 to FIG. 7). Further, as the warp or weft, other wire (wire material such as spun yarn, filament, drawn yarn, stretchable yarn (false twisted yarn or buckled yarn)) can be used.
In addition, in natural fiber, since cotton, hemp, or wool is excellent in a texture, it is preferable to use it as a structure of the surface material 12. Among chemical fibers, polyester fibers (for example, polyethylene terephthalate filaments) and nylon fibers are preferably used as the surface material 12 because they are excellent in durability, texture and strength.

[Layered tissue department]
The overlapped tissue portion is a tissue having a first tissue portion 12a and a second tissue portion 12b, and can be formed on all or part of the surface material 12 (see FIGS. 2, 4, and 5). The first tissue portion 12a is a single woven fabric disposed on the pad material 14 side. The second tissue portion 12 b is a single woven fabric disposed on the seating side of the surface material 12, and all or a part thereof is formed by the conductive wire 20.
The overlapped structure portion can be produced by using two or more kinds of yarns for either one of the warp and the weft, or both the warp and the weft, and examples thereof include a double structure, a single overlap structure, and a multilayer structure. . The double structure is a double woven fabric in which two single woven fabrics are overlapped and weaved simultaneously, and examples thereof include a bag weave described below (usually a bag, a side bag, etc.). The multilayer structure is a structure obtained by weaving three or more single woven fabrics.
And as a single layered structure (reference example), using a horizontal double weave (double woven fabric made using one kind of warp and two kinds of weft) or a vertical double weave (two kinds of warp and one kind of weft) An example is a double woven fabric produced (see FIG. 5).

[Production of first skin piece (cloth material)]
In this embodiment, the raw material of the surface material 12 (woven fabric) is woven using another wire material and the conductive wire material 20 (see FIGS. 4 to 7).
In the present embodiment, the raw fabric can be woven while taking the shape (substantially rectangular) of the first skin piece 40f as a pattern by using a jacquard loom. For example, corresponding to the shape of the first skin piece 40f, a substantially rectangular overlapped tissue portion (piece center portion 40C) is woven into the original fabric. And in the circumference | surroundings (piece | piece terminal part 40E) of a lamination | stacking structure | tissue part, the arrangement | positioning change of the conductive wire 20 is performed, and the structure | tissue different from the piece center part 40C is woven.

(Production of layered tissue part)
In this embodiment (reference example), one type of warp (21a to 21d) and two types of weft (front weft 22u and back weft 22d) are used. Then, a layered structure portion of a horizontal double woven fabric (an example of a horizontal double weave) is produced in the piece center portion 40C (see FIG. 4).
And while weaving the 1st structure part 12a and the 2nd structure part 12b, a part of 1st structure part 12a is comprised with the conductive wire 20 (refer FIG.5 and FIG.7). In the present embodiment, the second textured portion 12b of 1/3 ↑ oblique weaving is woven with the front weft 22u and each warp (21a-21d). Then, the first textured portion 12a of 3/1 ↑ oblique weaving is woven with the back weft 22d and the warps (21a to 21d). At this time, by using the conductive wire 20 instead of the back weft 22d (part or all), a part or the whole of the first textured portion 12a can be configured by the conductive wire 20.
In this embodiment, the front weft yarn 22u and the back weft yarn 22d (20) are organized at a ratio of 1: 1, so that the first tissue portion 12a and the second tissue portion 12b are connected relatively firmly. (See FIG. 7 (c)). In the present embodiment, the front weft yarn 22u and the back weft yarn 22d (20) can be organized at a ratio of 2: 1 or 3: 1.

And in this embodiment, the above-mentioned conductive wire 20 can be rearranged from the 1st structure part 12a to the 2nd structure part 12b in the piece terminal part 40E (refer FIG.4, FIG6 and FIG.7).
For example, at the piece end portion 40E, the back weft 22d (20) and the front weft 22u are vertically crossed. Then, the second weave 22b (20) and each warp (21a to 21d) are woven into the second textured portion 12b of 1/3 ↑ oblique weaving. Further, the first textured portion 12a of 3/1 ↑ oblique weaving is woven by the front weft 22u and each warp (21a to 21d). By doing so, the back weft 22d (20) can be rearranged from the first tissue portion 12a to the second tissue portion 12b.

Further, in the overlapped tissue portion of the present embodiment, the tissue configuration of the first tissue portion 12a and the tissue configuration of the second tissue portion 12b can be made the same or different. And the 1st structure part 12a and the 2nd structure part 12b can each be comprised by a plain-weave structure, an oblique-texture structure, a satin-weave structure, or these combination structures.
Furthermore, with reference to FIG. 7, both the 1st structure | tissue part 12a and the 2nd structure | tissue part 12b are comprised with a slash-texture structure | tissue. At this time, by making the fineness of the front weft yarn 22u smaller (thinner) than that of the back weft yarn 22d, the cover factor of the first tissue portion 12a can be made larger than that of the second tissue portion 12b. The cover factor (K) is a unit representing the size of the interval between the wefts (or warps) as viewed from the surface of the fabric. The larger the cover factor, the stronger the fabric.

(Disposition of conductive wire)
Here, when the cloth material 10 is used as the skin material 4S, it is preferable to arrange the plurality of conductive wires 20 in parallel (see FIG. 2). For example, when the fabric material 10 has a heater function, the interval dimension (W1) between the conductive wire materials 20 can be set to 1 mm to 60 mm.
When the cloth material 10 is provided with a sensor (electrode) function, it is desirable to set the distance between the conductive wires 20 within a range of 60 mm. If the distance between the conductive wire members 20 exceeds 60 mm, the sensor function of the cloth member 10 is deteriorated (capacitance is reduced) and may not function as an electrode. Preferably, the cloth material 10 has a more suitable sensor function (capacitance) by setting the upper limit value of the interval dimension of the conductive wire 20 to 30 mm.

Further, in the vehicle seat 2, there is a demand for energizing the conductive wire 20 in the contact portion (for example, thigh and shoulder) with the occupant while keeping the other portions in a non-energized state as much as possible (FIGS. 2 and FIG. 4).
Therefore, in the present embodiment, the conductive wire 20 is arranged more densely on the front side (position corresponding to the thigh rear surface) of the first skin piece 40f than on the rear side. Thus, the passenger | crew can be efficiently heated by arrange | positioning the electrically conductive wire 20 closely to the front side of the 1st skin piece 40f. Moreover, the power consumption of the skin material 4S (a heater or a sensor) can be suppressed as much as possible by disposing the conductive wire material 20 on the rear side of the first skin piece 40f.

And the raw material (planar shape) of the fabric material 10 can be formed by laminating | stacking and joining the above-mentioned surface material 12, the pad material 14, and the back base fabric 16 in this order (FIG.4 and FIG.9). reference). The joining means is not particularly limited, and examples thereof include methods such as laminating (welding), sewing and adhesion. In addition, in the cloth material 10 as the surface material 12, backing can be appropriately performed (resin layer is formed) on the back surface side (pad material 14 side).
Next, after the raw material of the cloth material 10 is cut into a substantially rectangular shape (seat surface shape), the first skin piece 40f is manufactured by attaching the energizing means 18 (described later) (see FIG. 4). A method for cutting the original fabric is not particularly limited, and examples thereof include a cutting device (such as a punch mechanism and a scissor mechanism) that can physically contact the cloth material 10 and an optical cutting means such as a laser.

[Energizing means]
The energization means 18 is a member that electrically connects the conductive wire 20 and the power source 9, and can be exemplified by a conductive wire, a conductive tape, and a conductive cloth (see FIG. 2).
By electrically connecting the conductive wire 20 and the power source 9 by the energization means 18, the conductive wire 20 can be brought into an energized state.

For example, the energization means 18 of the present embodiment includes a belt-like cloth body 18b, a plating layer 18c, and a conductive wire 18a (see FIGS. 2, 8, and 9).
The cloth body 18b has a long band shape (for example, a long band shape in the front-rear direction of the sheet) in the wiring direction of the conductor 18a, and can be formed of a cloth or a non-woven fabric (see FIG. 2). The cloth body 18b can be bonded to the conductive wire 20 in a wider area, and the contact resistance can be reduced. In order to further increase the contact between the conductive wire 20 and the cloth body 18b, for example, a plurality of sewings are preferable, and more preferably, the sewing is three or more.
The plating layer 18c is a layer having a metal or alloy having electrical conductivity, and is provided on the cloth body 18b (substance to be plated). The plated layer 18c may be formed on the entire cloth body 18b, or may be formed only on one surface of the cloth body 18b (the surface facing the surface material 12).
Examples of the conductive wire 18a include conductive wires such as metals and alloys, plated wires (wires having a synthetic fiber core and a plating layer), carbon fibers, and carbon fiber covering yarns. The conductive wire 18 a can be attached to the surface material 12 or the cloth body 18 b in order to connect to the conductive wire material 20. At this time, it is preferable that the conductive wire 18a is periodically oscillated and disposed on the surface material 12 or the cloth body 18b.

(Disposition of energizing means)
With reference to FIG. 2 and FIGS. 6-9, the electricity supply means 18 is arrange | positioned in the both terminal parts (surface side) of the 1st skin piece 40f. And the electricity supply means 18 is sewn on the surface material 12, and both ends of the plurality of conductive wires 20 are electrically connected in parallel. At this time, by disposing the conductive wire 20 in the second tissue portion 12b, the energizing means 18 and the conductive wire 20 can be electrically connected without requiring the pad material 14 and the resin layer to be removed.
Then, the terminals of the power cable 9 a are connected to the pair of energizing means 18, 18 to form a parallel circuit of the plurality of conductive wires 20 on the cloth material 10.
In the present embodiment, by forming a parallel circuit of the plurality of conductive wires 20 by the pair of energization means 18, 18, the plurality of conductive wires 20 can generate heat with relatively low power consumption.

In addition, in this embodiment, the 1st skin piece 40f terminal part and the 2nd skin piece 40s terminal part can be combined face-to-face, and a coupling | bond part can be formed (refer FIG. 2). This joint portion is disposed so as to protrude from the back side of the skin material 4S. At this time, the energization means 18 is attached to the first skin piece 40f end portion (joint portion) and is electrically connected to the exposed conductive wire 20 from the joint portion. Thus, the seating property on the surface of the skin material 4S and the like can be suitably maintained by disposing the energizing means 18 in the coupling portion protruding and arranged on the back surface side. Further, by disposing the energizing means 18 at the coupling portion, it becomes difficult to receive an impact due to the seating operation (becomes strong against a mechanical load), and disconnection of the conducting wire 18a is prevented or reduced.
And in this embodiment, a pair of electricity supply means 18 can each be arrange | positioned at the two terminal parts which arrange | position the 1st skin piece 40f facing each other (refer FIG. 2). By carrying out like this, the conductive wire 20 between both terminal parts (relatively wide range) can be made into an energized state.

In the present embodiment, since the conductive wire 20 is arranged on the surface material 12 (first textured portion 12a), the conductive wire 20 is not easily affected by the heat-insulating pad material 14, and the heat of the conductive wire 20 relative to the occupant is relatively quick. It is transmitted to. For this reason, according to the cloth material 10, it is possible to improve the temperature rise performance and power consumption (improve the performance of the heater).
Moreover, in this embodiment, the sensor function and heater function of the fabric material 10 can be suitably maintained by using the carbon fiber covering yarn for the conductive wire 20. Moreover, since the 1st structure | tissue part 12a functions as a reinforcing material of the conductive wire 20, and the 2nd structure | tissue part 12b functions as a protective material of the conductive wire 20, durability of the conductive wire 20 can be improved further.

Moreover, in this embodiment, durability of the skin material 4S can be improved by employ | adopting the overlap structure | tissue part of a horizontal double backing weave. According to this horizontal double-backed weaving, the first tissue portion 12a and the second tissue portion 12b are relatively firmly connected to each other, so that it is difficult for the two tissue portions to be displaced due to the seating operation of the occupant. Moreover, in the overlap structure part of a horizontal double backing weave, the density of the 2nd structure part 12b can be raised comparatively easily.
And in this embodiment, since the conductive wire 20 is not exposed as much as possible to the 2nd structure | tissue part 12b (surface material 12 surface), it becomes a seat structure with good appearance and seating property. Further, since the conductive wire material 20 is not attached to the cushion material 4P or the pad material 14, the original cushioning property of the seat is suitably maintained (a configuration with good seating property).
Therefore, according to the present embodiment, the conductive wire 20 can be attached to the cloth material 10 that can be used as the skin material 4S with good performance without adversely affecting the sheet characteristics.

<Embodiment 2>
Since the vehicle seat and the configuration thereof according to the present embodiment have substantially the same basic configuration as that of the first embodiment, common structures and the like are denoted by corresponding reference numerals and detailed description thereof is omitted.
In the surface material 12 of the present embodiment, the stacked tissue portions (12a, 12b) and the single-layered third tissue portion 12c are formed so as to be alternately arranged in the front-rear direction of the sheet (see FIG. 10).
It is preferable that the layered structure portions (12a, 12b) have a long structure in the wiring direction (sheet width direction) of the conductive wire 20. Moreover, it is preferable that the overlapped tissue part (12a, 12b) has a width dimension that allows the plurality of conductive wire members 20 to be mounted in parallel.

(Another example of layered tissue department)
In the present embodiment, the overlapped tissue part is produced using a bag weave (an example of a double structure). For example, in the bag weave shown in FIG. 11, two types of warp yarns (front warp yarn 21u and back warp yarn 21d) and two types of weft yarns (front weft yarn 22u and back weft yarn 22d) are used. Then, the first tissue portion 12a and the second tissue portion 12b are overlapped and weaved, and a part of the first tissue portion 12a is constituted by the conductive wire 20.
More specifically, the front warp 21u and the front weft 22u are entangled to form the second textured portion 12b, and the back warp 21d and the back weft 22d are entangled to form the first textured portion 12a. At this time, by using the conductive wire 20 instead of the back warp 21d (part), a part of the first textured portion 12a can be configured by the conductive wire 20. Finally, the end portions of the first structure portion 12a and the second structure portion 12b are closed with a third structure portion 12c (for example, a single woven fabric of the front weft 22u, the back weft 22d, and the front warp 21u) to form a bag shape. it can.
According to the present embodiment, by configuring a part or all of the first tissue portion 12a with the conductive wire material, the conductive wire material 20 is not exposed to the second tissue portion 12b (generally on the seating side of the surface material). be able to.

Furthermore, also in this embodiment, the above-described conductive wire 20 can be rearranged from the first tissue portion 12a to the second tissue portion 12b in the piece end portion 40E (see FIG. 12).
For example, the surface weft yarn 22u is arranged on the first skin piece side portion (piece end portion 40E). In the piece end portion 40E, the back warp 21d (20) and the front warp 21u are exchanged by crossing them up and down. By doing so, the back weft 22d (20) can be rearranged from the first tissue portion 12a to the second tissue portion 12b side.
The back warp 21d (20) and the front warp 21u may be crossed only once or may be crossed a plurality of times.

The cloth material of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments.
(1) In this embodiment, a plurality of superposed tissue portions can be formed on the top material 12, and a single superposed tissue portion can be formed on the top material 12. For example, a tissue portion can be formed on the substantially entire surface of the center portion of the first skin piece. In addition, one or a plurality of overlapping tissue portions can be formed in a part of the center portion of the first skin piece.
(2) Moreover, in this embodiment, the double structure | tissue part of the double structure | tissue and the one piece structure | tissue structure were illustrated exclusively. The layered tissue part can also be composed of a multilayer structure. For example, when three single tissues are stacked, the single tissue on the most seating side is the second tissue part. At least one of the remaining two single tissues becomes the first tissue part.
Moreover, in order to make it easy to fix the conductive wire by backing, it is preferable that the woven portion has a structure with few tissue points where the conductive wire intersects. For example, referring to FIG. 12, by arranging the conductive wire 20 in the second structure portion 12b of the skin piece terminal portion 40E with the warp floating, the energization means 18 and the conductive wire 20 are easily brought into contact with each other, and the connection stability between the two is stable. Will improve.
(3 )

(4) In the second embodiment, the first structure part, the second structure part, and the third structure part are each independently composed of any structure such as a plain weave structure, an oblique texture structure, a satin texture structure, or a combination structure thereof. You may have. In consideration of the design properties of the sheet, it is preferable that the second structure part and the third structure part have the same structure.
(5) Moreover, in this embodiment, although a part of 1st structure | tissue part 12a was comprised only with the conductive wire 20, all the 1st structure | tissue parts 12a can be comprised with the conductive wire 20. FIG. Moreover, a conductive wire can be arrange | positioned in the 1st structure | tissue part 12a at equal intervals.

(6) Moreover, in this embodiment, the example which arrange | positions the some conductive wire 20 in parallel with respect to the cloth material 10 in the sheet | seat width direction was demonstrated. The arrangement relationship of the plurality of conductive wires is not particularly limited, and may be arranged in parallel in the front-rear direction of the seat, for example. In this case, a pair of energizing means is arranged in front of and behind the seat.
(7) Moreover, in this embodiment, the conductive wire 20 was arrange | positioned with respect to the cloth material 10 at linear form. The conductive wire can be arranged on the surface material in various states such as a wave shape and a zigzag shape.
(8) Moreover, in this embodiment, the example which uses the cloth material 10 as the skin material 4S of the seat cushion 4 was demonstrated. The cloth material of this embodiment can be used as a skin material of various configurations of a vehicle seat such as a top plate main portion, a top plate side portion, a stile portion, a back portion, and a headrest portion. In addition to vehicle seats, it can be used as a skin material (sensor electrode, heater) for vehicle interior parts such as a ceiling part, a door part, and a console box.

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8 Headrest 10 Cloth Material 12 Surface Material 12a First Structure Part 12b Second Structure Part 12c Third Structure Part 14 Pad Material 16 Back Base Fabric 18 Conducting Means 20 Conductive Wire Material 22 Core Part 24 Sheath thread

Claims (2)

In the skin material of a vehicle interior product formed by combining a plurality of skin pieces,
The skin material has a first skin piece as the plurality of skin pieces, and the first skin piece is composed of a cloth material in which a pad material is laminated on one surface side of the skin material ,
The cloth material has a conductive wire that can be energized, and energization means that can supply power to the conductive wire,
The woven fabric as the surface material is provided with a layered tissue portion including a first tissue portion disposed on the one surface side and a second tissue portion disposed on the other surface side different from the one surface, and the layered tissue portion is bag-woven. And a part or all of the first tissue part is made of the conductive wire ,
The superposed tissue portion is formed in the center portion of the first skin piece, and the conductive wire is rearranged from the first tissue portion to the second tissue portion at the terminal portion of the first skin piece, and the energization is performed. A vehicle interior cover material that is electrically connected to the means . The skin material for a vehicle interior product according to claim 1, wherein the conductive wire has a core yarn made of carbon fiber and a sheath yarn twisted to the core yarn.

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