JP2014008377A - Facing material of vehicle component - Google Patents

Abstract

PROBLEM TO BE SOLVED: To optimize the dimensions of a connecting member while securing the function of a functional part to the utmost.SOLUTION: While a connecting member 20 is mounted along a functional part 10, the whole or a part of a second region 22 is separated from a slit part 24 in a part of the connecting member 20 of a surplus part sticking out of the functional part 10, and a conductive thread EY4 of a remaining first region 21 is electrically connected to a power supply.

Description

  The present invention relates to a skin material for a vehicle component member including a planar functional portion having a heater function and the like, and a connection member (a linear member that electrically connects the functional portion and a power source).

As a skin material of this type of vehicle constituent member, a skin material of a vehicle seat (seat cushion) disclosed in Patent Document 1 is known. This skin material has a functional part having a heater function and a pair of connecting members. The functional portion is a fabric surface material that follows the shape of the seating surface, and includes a plurality of first conductive yarns extending in the sheet width direction as constituent yarns.
Moreover, a pair of connection member is a strip | belt-shaped member made from a fabric, and can electrically connect a function part (1st electroconductive thread) and a power supply. Each connecting member is formed of a plurality of constituent yarns (mostly resin-made yarn materials), and a part of the warp yarn is formed of the second conductive yarn. And each connection member is longer than a function part, and can be stored by being wound up in a roll shape.

In the known technology, a part of each connecting member (roll shape) is pulled out and arranged at both ends of the functional part. And a cut | interruption part is put in a cross shape by irradiating a laser to the connection member part (excess part) which protruded from the function part. At this time, most of the thread material (made of resin) is cut, but the second conductive thread remains as it is.
Next, while stripping off the surplus portion of the connecting member from the cut portion (while optimizing the length of the connecting member), most of the yarn material is removed to expose only the second conductive yarn. By connecting the exposed second conductive yarn to the power source, the functional unit and the power source can be electrically connected.

JP 11-25889 A

By the way, in a well-known technique, after arrange | positioning a cut part in a connection member with a laser, arrange | positioning a connection member on both sides of a function part, the dimension of a connection member is optimized. At this time, the function of the functional part may be partially deteriorated due to, for example, the first conductive yarn being accidentally cut by the laser.
The present invention has been devised in view of the above points, and a problem to be solved by the present invention is to optimize the dimensions of the connecting member while ensuring the function of the functional portion as much as possible.

As means for solving the above-mentioned problems, the skin material of the vehicle constituent member of the first invention is a planar functional part that can be used as an electrode or a heater of the sensor member, and a linear shape that electrically connects the functional part and the power source. Connecting member.
In the present invention, the connecting member is attached along the functional portion, and a part of the connecting portion of the surplus portion protruding from the functional portion is removed (the size is optimized). In this type of configuration, it is desirable that the size of the connecting member can be optimized while ensuring the function of the functional unit as much as possible.

So, in this invention, while a connection member is a cloth material made from a cloth, the 1st site | part provided with the electrically conductive thread which can be supplied along the elongate direction of the connection member, and the elongate direction of a connection member It has the 2nd site | part provided with the arrange | positioned thread material, and the cut | interruption part formed in cross shape in the elongate direction of the 2nd site | part.
And while attaching the connection member along the function part, in the connection member part of the surplus part protruding from the function part, all or part of the second part is separated from the cut part, and the remaining conductive yarn of the first part Is electrically connected to the power source.
In the present invention, by forming the cut portion in the connecting member in advance, the size of the connecting member can be optimized without using a technique such as a laser (while eliminating the risk of breakage of the functional portion as much as possible).

The skin material of the vehicle constituent member of the second invention is the skin material of the vehicle constituent member of the first invention, wherein the connecting member made of a woven fabric has conductive yarn and thread material as constituent yarns, and the first portion has There are fewer intersections of the tissue which comprises than the intersection of the structure which comprises a 2nd site | part.
In the present invention, since the number of intersections of the tissues in the first part is relatively small (the structure is rough) and is easy to unravel, it is easy to remove other thread materials that intersect the conductive yarn. In addition, since there are relatively many intersections of tissues in the second part (the tissues are dense), the structure is relatively difficult to unravel even if cut portions are formed.

  According to the first aspect of the present invention, it is possible to optimize the dimensions of the connecting member while ensuring the function of the functional part as much as possible. According to the second invention, the dimensions of the connecting member can be more reliably optimized.

It is a perspective view of a vehicle seat. It is a front view of a part of skin material. It is a schematic front view which expands and shows a part of connection member. It is a front view which shows the attachment operation | work of the connection member with respect to a function part, (a) is a figure of the connection member part at the time of normal, (b) is a figure of the connection member part at the time of attachment, c) is a view of a part of the connecting member at the time of disconnection.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each of the drawings, a reference symbol F is attached to the front of the vehicle seat, a reference symbol B to the rear of the vehicle seat, a reference symbol UP to the upper side of the vehicle seat, and a reference symbol DW to the lower side of the vehicle seat.
A vehicle seat 2 (an example of a vehicle component) in FIG. 1 includes a seat cushion 4, a seat back 6, and a headrest 8. Each of these seat constituent members includes a cushion material (4P, 6P, 8P) that elastically supports an occupant by forming a seat outer shape, and a skin material (4S, 6S, 8S) that covers the cushion material.

In the present embodiment, the seat cushion 4 has a functional unit 10 (details will be described later) and functions as an electrode or a heater of a capacitive sensor.
And in a present Example, while providing the function part 10 in the skin material 4S one part, the connection member 20 (after-mentioned) is arrange | positioned on the both sides of the function part 10 (refer FIG. 2). At this time, the connecting member 20 portion (the surplus portion) protruding from the functional unit 10 is removed. With this type of configuration, the size of the connecting member 20 can be optimized while ensuring the function of the functional unit 10 as much as possible. desirable.
Therefore, in this embodiment, the dimensions of the connection member 20 are optimized while ensuring the function of the function unit 10 as much as possible with the configuration (cut portion 24) described later. Hereinafter, each configuration will be described in detail.

(Skin material)
The skin material 4S is a bag-like planar member, and can be formed by stitching a plurality of skin pieces (for example, the first skin piece 40f and the second skin piece 40s) (see FIGS. 1 and 2).
Here, the skin material 4S can be formed of fabric (woven fabric, knitted fabric, non-woven fabric), leather (natural leather, synthetic leather) or a composite material thereof.
The first skin piece 40f is a substantially rectangular (front view) planar member that follows the shape of the seat center (seat surface), and the second skin piece 40s is a planar member that conforms to the shape of the seat side portion. is there. A pad material 14 (typically a foam resin surface material) and a back base fabric 16 (for example, a non-woven fabric) can be laminated on the back side (the side facing the cushion material) of each skin piece.
In this embodiment, a skin material 4S as a woven fabric is created (details will be described later). At this time, the first skin piece 40f can function as the functional unit 10 by having the first conductive yarn EY1 and another yarn material (both described later).

(Conductive yarn)
The first conductive yarn EY1 (second conductive yarn EY2 described later) is a conductive wire that can be energized, and typically has a specific resistance (also referred to as volume resistivity) of 10 ⁰ to 10 ⁻¹² Ω · cm. . By attaching the first conductive yarn EY1 to the first skin piece 40f (functional part 10), it can be used as an electrode or a heater of a capacitive sensor.
Here, the “specific resistance (volume resistivity)” is a physical property value used for comparing what kind of material is difficult to conduct electricity, and is measured in accordance with, for example, “JIS K-7194”. Can do.

For example, examples of the first conductive yarn EY1 include a thread material such as a metal or an alloy, a carbon fiber filament, a carbon fiber covering thread, and a plated wire. The plated wire has a non-conductive or conductive wire (core yarn) and a plated layer of metal or alloy.
Carbon fibers are polyacrylonitrile-based carbon fibers (PAN-based carbon fibers) and pitch-based carbon fibers. Among them, filaments of carbon fibers (carbonized fibers, graphitized fibers, graphite fibers) having a firing temperature of 1000 ° C. or higher have good electrical conductivity, and can be suitably used as the first conductive yarn EY1 of this embodiment.

The carbon fiber covering yarn may have a core yarn made of carbon fiber (for example, a bundle made of a plurality of carbon fiber filaments) and a sheath yarn (other yarn material described later) twisted onto the core yarn. preferable. The number of carbon fibers (the number of filaments) in the core yarn is not particularly limited, but typically, it is desirable that the number is two or more.
By covering the core fiber of the carbon fiber with the sheath thread, 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 first conductive yarn EY1, it is possible to prevent or reduce disconnection due to pressing or friction during sitting.

(Other thread materials)
Examples of other thread materials (materials) include plant-based and animal-based natural fibers, chemical fibers made of thermoplastic resin or thermosetting resin, and mixed yarns thereof. The other yarn material may be a linear member made of the above material, and examples thereof include spun yarn, filament, drawn yarn, and stretch-processed yarn (false twisted yarn and buckled yarn).
In addition, in natural fiber, since cotton, hemp, or wool is excellent in texture, it is preferable to use it as a constituent yarn of the skin material 4S. Among chemical fibers, polyester fibers (for example, polyethylene terephthalate filaments) and nylon fibers are preferably used as constituent yarns of the skin material 4S because they are excellent in durability, texture and strength.
The fineness of the other thread material is not particularly limited, but other thread material of, for example, about 30 to 3000 dtex can be used (see FIG. 4).

(Create first skin piece (functional part))
In the present embodiment, when creating the fabric as the skin material 4S, the first skin piece 40f is formed as the functional portion 10 (see FIG. 2).
That is, by using the first conductive yarn EY1 as a part of the constituent yarn of the first skin piece 40f and using another thread material (not shown) in the other part of the constituent yarn, the first skin piece 40f can function. Part 10. In this embodiment, after arranging a plurality of first conductive yarns EY1 in parallel in the sheet width direction, the end portions of these conductive yarns EY1 are electrically connected to connecting members 20 (described later), respectively (in the figure, For the sake of convenience, only a part of the first conductive yarns are provided with reference numerals).
At this time, a single first conductive yarn EY1 may be arranged in the functional unit 10, but it is preferable to arrange a plurality of first conductive yarns EY1 in parallel. For example, when the function unit 10 has a heater function, the distance between the first conductive yarns EY1 can be set to 1 mm to 60 mm.
In addition, when the function unit 10 has a sensor (electrode) function, it is desirable to set the distance between the first conductive yarns EY1 within a range of 60 mm. If the distance between the first conductive yarns EY1 exceeds 60 mm, the sensor function of the first skin piece 40f deteriorates (capacitance decreases) and may not function as an electrode. Preferably, the first skin piece 40f has a more suitable sensor function (capacitance) by setting the upper limit value of the interval dimension of the first conductive yarns EY1 to 30 mm.

Here, the functional unit 10 may be formed on the entire surface of the first skin piece 40f or may be formed on a part thereof.
For example, by arranging a plurality of first conductive yarns EY1 in parallel over substantially the entire surface of the first skin piece 40f, the entire surface of the first skin piece 40f can be used as the functional unit 10. Moreover, a part of 1st skin piece 40f can be made into the function part 10 by arrange | positioning several 1st electroconductive yarn EY1 in parallel to a part of 1st skin piece 40f.
Further, when the plurality of first conductive yarns EY1 are arranged in parallel over substantially the entire surface of the first skin piece 40f, only the portion that needs to be energized in the plurality of first conductive yarns EY1 can be used as the functional unit 10. .

(Connecting member)
The connection member 20 is a belt-like member (made of fabric), and has a first portion 21, a second portion 22, and a plurality of cut portions 24 (described later) (see FIGS. 2 and 3).
The first portion 21 is a portion having the second conductive yarn EY2 as a constituent yarn, and constitutes one side of the connecting member 20. The second conductive yarn EY2 can be formed of the same material as the first conductive yarn EY1, and is preferably superior in specific resistance than the first conductive yarn EY1.
The second portion 22 is a portion having a thread material (for example, a thread material different from the conductive thread) as a constituent thread, and constitutes the other side of the connecting member 20. And as a thread material which comprises the 2nd site | part 22, the above-mentioned other thread material (Y3) can be used.
Here, the ratio (area ratio) between the first part 21 and the second part 22 is not particularly limited. The 1st site | part 21 should just have an area which can supply with electricity to the function part 10, and the 2nd site | part 22 should just have an area which can attach the function part 10 (it should just be used as a seam allowance etc.). ).
The connecting member 20 of the present embodiment is a relatively long strip-shaped member, and can be stored by winding it in a roll shape. Then, as will be described later, each of the connecting members 20 (roll shape) can be disposed at both ends of the functional unit 10 while being pulled out.

(Create connection member)
In this embodiment, when the connecting member 20 (woven fabric) is produced, the warp yarns (EY2, Y3) and the weft yarn (Y4) are used as constituent yarns (see FIG. 3). The connecting member 20 can be formed by extending the warp yarn in the longitudinal direction of the connecting member 20 (disposing along the longitudinal direction) and appropriately crossing the weft yarn (providing an intersection).
In the present embodiment, the second conductive yarn EY2 is used for the warp yarn on one side of the connection member 20, and another yarn material Y3 is used for the warp yarn on the other side of the connection member 20. The connecting member 20 is formed by appropriately intersecting these warp yarns (EY2, Y3) with another yarn material Y4 as a weft yarn. By doing so, the first part 21 is formed on one side of the connecting member 20 and the second part 22 is formed on the other side.

In the present embodiment, it is preferable that the intersection of the tissue of the first portion 21 (first intersection CP1) is smaller than the intersection of the tissue of the second portion 22 (second intersection CP2) (in FIG. 3, for convenience, Only some intersections are marked).
For example, in the present embodiment, at the first portion 21, the warp yarn (Y4) is crossed every two warp yarns (EY2), and at the second portion 22, the warp yarn (Y3) is warped (Y3) Cross Y4) one by one. By doing so, the first portion 21 has a configuration in which the first intersection point CP1 is relatively small (the tissue is rough) and can be easily solved. Further, the second portion 22 has a configuration in which the second intersection point CP2 is relatively large (the tissue becomes dense) and is not easily solved.

(Cut)
The cut portion 24 is a cut formed in a transverse shape in the short direction of the second portion 22 and can be formed by partially cutting the constituent yarn of the second portion 22 (see FIGS. 3 and 4). .
In the present embodiment, the plurality of cut portions 24 are formed at appropriate intervals in the longitudinal direction of the second portion 22 (in FIG. 4, for convenience, some cut portions are provided with reference numerals). At this time, in each cut portion 24, the warp yarn (other yarn material Y3) of the second portion 22 is all cut, and the weft yarn (other yarn material Y4) is cut at a portion where the cut portion 24 intersects. State. At this time, in the second portion 22, since the second intersection point CP2 is relatively large (the tissue is dense) as described above, even if the cut portion 24 is formed, it is relatively difficult to unravel.
The method for forming the cut portion 24 is not particularly limited, and examples thereof include a mechanism capable of physically cutting the connecting member 20 (punch mechanism, scissor mechanism, etc.) and an optical cutting mechanism such as a laser.

(Connection member installation work)
With reference to FIG.2 and FIG.4, a pair of connection member 20 is electrically connected to the power supply 30, attaching to the both sides of the 1st skin piece 40f (functional part 10), respectively.
In the present embodiment, a part of each connecting member 20 (roll shape) is pulled out and arranged along the end of the first skin piece 40f. At this time, the connecting member 20 is pulled out relatively long while being superposed on the first skin piece 40f (an excess portion protruding from the functional portion 10 is formed).
Then, with the first conductive yarn EY1 in contact with the first portion 21 (second conductive yarn EY2), the end portion of the first skin piece 40f is stitched to the second portion 22 (the suture line SEW is formed). Can be installed).
Next, in the surplus part of each connecting member 20 that protrudes from the functional part 10, all or part of the second part 22 is separated from the arbitrary cut part 24, and the remaining first part 21 is electrically connected to the power supply 30. Connect. At this time, the first part 21 has a configuration in which the first intersection point CP1 is small (the structure is coarse) and is easy to unwind, and thus the other yarn material Y4 can be easily removed (the yarn is easily unwound and removed).
Thus, by electrically connecting the first skin piece 40f (functional unit 10) to the power source 30 via the pair of connecting members 20, the first skin piece 40f can function as a heater.

As described above, in the present embodiment, by forming the cut portion 24 in the connection member 20 in advance, the length dimension of the connection member 20 can be optimized without using a technique such as a laser. And after attaching the connection member 20 of a roll state to the function part 10, it becomes possible to remove the 2nd site | part 22 with the cut part 24 of arbitrary positions, and a process reduction and a yield improvement are attained.
In the present embodiment, the first intersection point CP1 of the first portion 21 is relatively small (the structure is rough) and is easy to be unraveled, so it is easy to remove the other yarn material Y4 (the weft yarn) intersecting the second conductive yarn EY2. In addition, since the second intersection point CP2 of the second portion 22 is relatively large (the tissue is dense), the structure is relatively difficult to unravel even if the cut portion 24 is formed.
For this reason, according to the present Example, the length dimension of the connection member 20 can be optimized, ensuring the function of the function part 10 as much as possible.

The skin material of the vehicle constituent member of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments.
(1) In this embodiment, although the structure of the function part 10 was illustrated, it is not the meaning which limits the structure of the part. For example, a functional part can be formed by forming a conductive resin layer (such as a resin layer containing conductive carbon) on one surface of the first skin piece or by arranging a conductive surface material. . Moreover, a function part can also be formed by adhering and attaching the first conductive yarn to the back surface of the first skin piece (for example, non-woven fabric or leather). Moreover, a function part can be formed in the arbitrary positions of a skin material, for example, it can form in other skin pieces, such as a 2nd skin piece other than a 1st skin piece.

(2) Moreover, in this embodiment, although the structure of the connection member 20 was illustrated, it is not the meaning which limits the structure of the member. For example, in the present embodiment, an example in which the pair of connecting members 20 are attached to both ends of the functional unit 10 (an example in which the functional unit functions as a heater) has been described. On the other hand, when the functional part functions as an electrode of the capacitive sensor, for example, a connection member (single member) can be attached to one side of the functional part.
Moreover, a 1st site | part can also be formed by adhere | attaching and attaching a 2nd conductive thread to the back surface of a connection member (for example, product made from a nonwoven fabric). Moreover, the number of intersections of the tissues of the first part can be made the same as that of the second part, and can be made larger than that of the second part. And a functional part can also be attached to a 2nd site | part by methods, such as adhesion | attachment. In addition, the warp yarn of the second part can use various yarn materials in addition to other yarn materials.

(3) Moreover, in this embodiment, although the structure of the cut | interruption part 24 was illustrated, it is not the meaning which limits the structure of the part. For example, the connection member 20 may be formed with a plurality of cut portions or a single cut portion. In addition, the weft yarn (other yarn material) can be in an uncut state at the cut portion. Moreover, in a cut | interruption part, a part of 1st site | part may be made into the cutting state.
(4) Moreover, in this embodiment, the example which makes all the warp | yarns Y3 of the 2nd site | part 22 in a cut state in the cut part 24 was demonstrated. In contrast to this, a part of the warp yarn at the second portion can be in an uncut state at the cut portion. Then, after cutting off the surplus portion of the connecting member, the second conductive yarn is bundled well together by, for example, wrapping a part of the warp yarn of the second portion in the uncut state around the remaining first portion. Can do.

(5) In the present embodiment, the seat cushion 4 has been described as an example. However, the configuration of the present embodiment can be applied to various seat components such as the seat back 6. Moreover, although this embodiment demonstrated the vehicle seat as an example, the structure of a present Example is applicable to various vehicle structural members, such as an instrument panel, a vehicle interior wall body, and a vehicle interior ceiling.

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8 Headrest 4S Skin Material 10 Functional Part 20 Connection Member 21 First Part 22 Second Part 24 Cut 30 Power Supply 40f First Skin Piece 40s Second Skin Piece EY1 First Conductive Yarn EY2 Second conductive yarn Y3 Yarn material (part of warp yarn)
Y4 thread material (horizontal thread)
CP1 First intersection CP2 Second intersection

Claims (2)

While having a planar functional part that can be used as an electrode or a heater of a sensor member, and a linear connecting member that electrically connects the functional part and a power source, while attaching the connecting member along the functional part, In the skin material of the vehicle component member configured to remove the connection member part of the excess portion that protrudes from the functional unit,
The connection member is a cloth material made of cloth, and is disposed along the longitudinal direction of the connection member, and a first portion including a conductive thread that can be energized disposed along the longitudinal direction of the connection member. A second portion provided with a thread material, and a cut portion formed in a transverse shape in the short direction of the second portion,
While attaching the connection member along the function part, in the connection member part of the surplus part protruding from the function part, all or part of the second part is separated from the cut part, and the remaining first part A skin material of a vehicle constituent member configured to electrically connect one portion of the conductive yarn to the power source. The connection member made of a woven fabric has the conductive yarn and the yarn material as constituent yarns, and the number of intersections of the tissues constituting the first part is less than the intersections of the tissues constituting the second part. The skin material of the vehicle structural member of 1.

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