JP3155205B2 - Automotive seat covers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile seat cover for covering an automobile seat having a built-in airbag.

[0002]

2. Description of the Related Art Recently, as shown in FIG.
A seat for a vehicle with a built-in airbag has been developed in which the airbag is deployed from the side of the seat 2 to reduce the impact on the occupant due to a collision from the side of the vehicle.

When such a seat with a built-in airbag is covered with a seat cover, the airbag cannot be deployed unless the seat cover is broken by the deployment of the airbag. In addition, it affects the operation time, and in the conventional seat cover, since the sewn portion of the fabric or the broken portion of the fabric of the seat cover itself is not constant, the deployment mode of the airbag may change.

Therefore, a seat cover in which a window is formed so as to face a deployed portion of the airbag of the seat has been studied.

[0005]

The above-mentioned seat cover in which a window hole is formed in the seat cover has a problem of impairing the appearance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and a seat cover is broken by an air bag deployment output to form a predetermined air bag deployment mode without forming a window hole that impairs appearance in the seat cover. An object of the present invention is to provide an automobile seat cover that does not change.

[0007]

Means for Solving the Problems] automotive seat covers invention 請 Motomeko 1 wherein the sheet with a built-in airbag
A front part that covers the backrest, a back part that covers the back of the seat,
And a side portion that covers an outer side surface of the sheet,
An automotive seat cover attached to the seat
In front of the deployment site of the airbag in the seat cover
A sewn portion between a surface portion and the side portion or an intermediate portion between the side portions
Sewing that is broken by the deployment output of the airbag
Part, and the sewn part is usually
In some cases, the tensile elongation is
Large and easy to break with the deployment output of the airbag
A sewing thread having a low tensile strength , a tensile strength of 5 to 8 N and a tensile elongation of 40 to 90% is sewn at a stitch pitch of 9 to 20 stitches / 3 cm.

The sewing thread at the sewing portion, which is normally broken by the deployment output of the airbag of the seat cover, has a large tensile elongation, so that the stress is dispersed and is not broken. The strength is low, and the stitch pitch is adjusted according to the deployment output of the airbag and the tensile elongation and the tensile strength of the sewing thread. A predetermined portion is reliably cut open by stress concentration.

According to a second aspect of the present invention, there is provided an automobile seat cover including a front portion covering a backrest portion of a seat having an airbag, a back portion covering a back surface of the seat, and a side surface covering an outer side surface of the seat. A vehicle seat cover attached to the seat, the connecting portion between the front portion and the side portion of the deployment portion of the airbag in the seat cover or an intermediate portion of the side portion, A tissue portion incorporating the ground yarn of the knitted fabric that is broken by the deployment output is provided, and the tissue portion is more easily broken by the deployment output of the airbag than the other tissue portions . Ground thread
It is obtained by reducing the number of other <br/> ground yarn to weaving the one land yarns of the not incorporated weave pattern yarn between.

Then, at the deployment output of the airbag, the deployment portion of the airbag at the tissue portion of the fabric of the seat cover is broken, the seat cover is cut open, and the airbag is deployed in the intended deployment mode.

According to a third aspect of the present invention, there is provided an automobile seat cover comprising:
A vehicle seat cover including a front portion covering a backrest portion of a seat having an airbag, a back portion covering a back surface of the seat, and a side portion covering an outer side surface of the seat, and attached to the seat, the deployment site of the airbag in the seat cover, the sewn portion is broken by deployment output of the air bag is provided, sewing attachment portion, the edge of the sewing Chakuen section through an equivalent fabric knitted fabric with sewn at sewing thread, it is provided with a tissue section with a reduced number of land yarns weaving as easily be broken in the deployment output of the air bag in the knitted fabric.

[0012] Then, with the deployment output of the airbag, the fabric portion of the knitted fabric in which the edges of the sewing edges of the seat cover are sewn is cut open with a reduced number of ground yarns to be woven. Is expanded in the expansion mode.

According to a fourth aspect of the present invention, there is provided an automobile seat cover including a front portion covering a backrest portion of a seat including an airbag, a rear portion covering a back surface of the seat, and a side surface covering an outer side surface of the seat. comprising a part, an automotive seat cover attached to the seat, the deployment site of the airbag in the seat cover, provided with a sewn portion is broken by deployment output of the air bag, sewing attachment part, this The edge of the sewn edge is sewn with a sewing thread through the woven fabric, and a woven portion having a coarse diameter yarn or weft is provided on the woven fabric so as to be easily broken by the deployment output of the airbag. It is a thing.

[0014] Then, at the deployment output of the airbag, a textured portion in which a diameter thread or a weft thread is coarsened is cut open in the cloth of the woven fabric to which the edge of the sewing edge of the seat cover is sewn. It is expanded in expansion mode.

According to a fifth aspect of the present invention, there is provided an automobile seat cover including a front portion covering a backrest portion of a seat including an airbag, a rear portion covering a back surface of the seat, and a side surface covering an outer side surface of the seat. comprising a part, an automotive seat cover attached to the seat, the deployment site of the airbag in the seat cover, provided with a sewn portion is broken by deployment output of the air bag, sewing attachment part, this The edge of the sewn edge is sewn with a sewing thread through a non-woven fabric, and the non-woven fabric is provided with a tissue portion having a small number of fibers so that the non-woven fabric is easily broken by the deployment output of the airbag.

[0016] The nonwoven fabric sewn at the edge of the sewn edge of the seat cover at the deployment output of the airbag is cut open at the tissue portion with less fibers so that it is easily broken.
The airbag is deployed in the intended deployment mode.

According to a sixth aspect of the present invention, there is provided an automobile seat cover including a front portion covering a backrest portion of a seat including an airbag, a back portion covering a back surface of the seat, and a side surface covering an outer side surface of the seat. comprising a part, an automotive seat cover attached to the seat, the deployment site of the airbag in the seat cover, provided with a sewn portion is broken by deployment output of the air bag, sewing attachment part, this The edge of the sewn edge is sewn with a sewing thread via a synthetic leather cloth, and the synthetic leather is provided with a tissue portion having a thin leather thickness so as to be easily broken by the deployment output of the airbag. It is.

[0018] Then, in the fabric of synthetic leather in which the edge of the sewing edge of the seat cover is sewn by the deployment output of the airbag, a tissue portion having a small thickness of the leather is cut open, and the airbag is in the intended deployment mode. Will be deployed in.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an automobile seat cover according to the present invention will be described with reference to FIGS.

In FIG. 1, reference numeral 10 denotes a seat cover, and a front portion 11 covers a backrest of the seat and a back portion covers a back surface of the seat.
The lower end of 13 is tied to the lower part of the sheet with a string 13a or the like so that it can be attached to the sheet. This seat cover 10
The sewn portion 14 of the front portion 11 covering the backrest portion and the side portion 12 covering the outer side surface of the seat is broken by the deployment output of the airbag and can be cut open.

As shown in FIG. 2, the sewn portion 14 to be broken by the deployment output of the airbag is sewn with sewing thread 17 by folding back the sewn edges 15 and 16 of the front portion 11 and the side portion 12, respectively. And
The folded seam edges 15 and 16 of the front part 11 and the side part 12
The sewing thread 18 is sewn by adjusting the sewing thread 18 so that the edge of the airbag is easily broken at the deployment output of the airbag as compared with the sewn portion of the other part, and the sewing thread 18 is broken at the deployment output of the airbag. Twelve are cut out. That is, in normal times, the tensile elongation is increased so that the stress is not dispersed and broken, and the sewing thread 18 having a low tensile strength is used so as to be easily broken by the deployment output of the airbag. Adjust the pitch to deploy the airbag in the desired deployment mode.

The sewing thread 18 broken by the deployment output of the airbag has a tensile strength of 5 to 8 N and a tensile elongation of 40 to
Using a sewing thread in the range of 90%, sewing is performed at a stitch pitch of 9 to 20 stitches / 3 cm.

Next, the operation of this embodiment will be described.

When the airbag is deployed due to an impact such as a collision, the side portion 12 covering the side surface of the seat at the deployed portion of the airbag and the front portion 11 for sewing the periphery of the side portion 12 are sewn. The sewing thread 18 in the portion is broken, the side surface portion 12 of the seat cover 10 is cut open, and the airbag is deployed in an intended deployment mode.

The seam between the side portion 12 and the front portion 11 of the seat cover 10, which is broken by the output of the airbag, is stitched so that the seam is broken by the output of the airbag from other portions. Since the adjustment is performed in the range of 9 to 20 stitches / 3 cm, the side portion 12 of the seat cover 10 which is the deployment portion of the airbag is reliably cut out from the front portion 11.

The sewing thread 18 of the sewn portion 14 which is normally broken by the deployment output of the airbag of the seat cover 10 is in the range of 40 to 90% in tensile elongation and has a large tensile elongation.
With the external force applied to the seat cover 10 due to seating, the stress is not dispersed and broken. In addition, since the sewing thread 18 has a tensile strength in the range of 5 to 8 N, a predetermined portion is reliably cut open by stress concentration due to the deployment output of the airbag.

Next, another embodiment will be described with reference to FIG.

In the above-described embodiment, the sewn portion 14 that is broken by the airbag deployment output of the seat cover 10 is the sewn portion between the side surface portion 12 and the front surface portion 11. However, in this embodiment, the sewn portion 14 is the seam portion. As shown in FIG. 2, the sewn edges of the divided side portions 12a and 12b are folded back and sewn with sewing thread 17, and the ends of the folded sewn edges are divided as shown in FIG. Adjust the seam so that the edge is broken at the airbag deployment output compared to the sewn portion of the other part, sew with the sewing thread 18, and the sewing thread 18 is broken at the airbag deployment output and the side portion Twelve are cut out. The sewing thread 18 has a low tensile strength and a large tensile elongation of 5 to 8 N.
Using a sewing thread having an elongation of 40 to 90%, sewing is performed at a stitch pitch of 9 to 20 stitches / 3 cm.

Also in this embodiment, when the airbag is deployed due to an impact such as a collision, a sewn portion for sewing the edges of the side portions 12a and 12b covering the side surface of the sheet at the deployed portion of the airbag. The 19 sewing threads 18 are broken, the side surface 12 of the seat cover 10 is cut open, and the airbag is deployed in an intended deployment mode.

The seam 19 of the seat cover 10 to be sewn with the side portions 12a and 12b, which are broken by the airbag deployment output, is adjusted so that the other portions are broken by the airbag deployment output. Seat cover 10
The side portion 12 serving as a deployment portion of the airbag is cut open.

Further, since the sewing thread 18 of the sewn portion 19, which is normally broken by the deployment output of the airbag of the seat cover 10, has a large tensile elongation, the stress is dispersed by the external force applied to the seat cover 10 by sitting. It will not be broken. Also, a predetermined portion is reliably cut open by stress concentration due to the deployment output of the airbag.

Further, in the above-described embodiment, the seat cover 10 is attached to the seat by connecting the lower portions of the front portion 11 and the rear portion 13 with a string 13a or the like, but as shown in FIG. Can cover the sheet and attach it to the sheet with a hook and loop fastener (not shown),
Also in this seat cover 10, the seam 14 of the front part 11 and the side part 12 is stitched so as to be broken by the deployment output of the airbag with respect to other parts as in the embodiment shown in FIG. The sewing thread 18 having a high tensile elongation and a low tensile strength having a strength of 5 to 8 N and an elongation of 40 to 90%.
And sew in the range of stitch pitch 9 to 20 stitches / 3 cm.

Also in this embodiment, when the airbag is deployed, the front side portion which sewes the side portion 12 covering the side surface of the sheet at the deployment portion of the airbag and the periphery of the side portion 12
The sewing thread 18 of the sewing portion 14 with the sewing
Side 12 is cut open and the airbag is deployed in the intended deployment mode.

Further, as shown in FIG.
3 covers the seat and attaches it to the seat with a hook-and-loop fastener (not shown). In this seat cover 10 as well, the side portion 12 is divided and sewn to the side portions 12a and 12b as in the embodiment shown in FIG. The tensile elongation is large so that the attachment part 19 is broken by the deployment output of the airbag compared to the other parts,
A sewing thread 18 having a low tensile strength and a strength in the range of 5 to 8 N and an elongation of 40 to 90% is used, and sewing is performed at a stitch pitch of 9 to 20 stitches / 3 cm.

Also in this embodiment, when the airbag is deployed, the sewing thread 18 of the sewn portion 19 with the side portions 12a and 12b covering the side surface of the seat at the deployment portion of the airbag is broken, and The side 12 of the cover 10 is cut open and the airbag is deployed in the desired deployment mode.

In each of the above-described embodiments, the seam of the sewing thread 18 of the seams 14 and 19 determines the seam pitch or the like according to the deployment output of the airbag, the tensile elongation and the tensile strength. The part is to be broken by the deployment output of the airbag.

Next, another embodiment will be described with reference to FIGS.

In this embodiment, a tissue portion 24 that is broken by the deployment output of the airbag is formed in a part of the fabric 23 of the automobile seat cover 20 that covers the seat containing the airbag. This is a position where the portion covering the deployment portion of the airbag incorporated in the seat is cut open.

The seat cover 20 covers the seat and is attached to the seat with a hook-and-loop fastener (not shown). The seat cover 20 is provided with a backrest of a built-in seat such that the airbag is deployed from the side of the seat. The tissue portion 24 of the connecting portion between the front portion 21 that covers the portion and the side portion 22 that covers the outer side surface of the seat is broken by the deployment output of the airbag and can be cut open.

When the fabric 23 forming the tissue portion 24 that is broken by the output of deployment of the airbag is a knitted fabric, as shown in FIG. The knitted yarn is knitted with the ground yarn 25 and the other ground yarn 26 that is alternately woven, and further, the pattern yarn 27 is knitted with the ground yarns 25 and 26. Then, a tissue portion 24 that is broken by the deployment output of the airbag is formed at the connecting portion 28 between the front portion 21 and the side portion 22. Do not incorporate the pattern yarn 27 in this textured part 24 and
The number of the other ground yarns 26 is reduced so that the other ground yarns 26 to be woven into 25 are coarser than the other portions. Twelve are cut out.

Next, the operation of this embodiment will be described.

When the airbag is deployed due to an impact such as a collision, the other ground yarn 26 of the tissue portion 24 of the connecting portion 28 of the side portion 22 and the front portion 21 covering the side surface of the sheet at the deployed portion of the airbag. Is cut off, the side surface portion 22 of the seat cover 20 is cut open, and the airbag is deployed in an intended deployment mode.

In the above embodiment, the seat cover
The tissue portion 24 that is broken by the deployment output of the airbag 20 is the connecting portion 28 between the side portion 22 and the front portion 21. However, in the embodiment shown in FIG. As shown in FIG. 7, one of the ground yarns 25 is formed between the divided side portions 22a and 22b so that the side portion 22 is split right and left at the tissue portion 24 which is broken by the output. The other ground yarn 26 is knitted coarser than other portions without interweaving the pattern yarn 27 therebetween. Then, the tissue portion 24 is broken by the deployment output of the airbag, and the side surface portion 22 is cut open.

Also in this embodiment, when the airbag is deployed due to an impact such as a collision, the tissue portion 24 of the side portion 22 covering the side surface of the sheet at the deployment portion of the airbag is broken by the deployment output of the airbag. Is cut off, the side surface portion 12 of the seat cover 20 is cut open by dividing into left and right side surface portions 22a and 22b, and the airbag is deployed in an intended deployment mode.

In each of the embodiments shown in FIGS. 6 and 8, the other ground yarn 26 of the tissue portion 24, which is broken by the airbag deployment output, is connected to the deployment output of the airbag and the tensile extension of the other ground yarn 26. The number, texture and the like are determined according to the degree and the tensile strength so that it is more easily broken than other tissue parts.

In each of the embodiments shown in FIGS. 6 and 8, the seat cover 20 covers the seat and is attached to the seat with a hook-and-loop fastener (not shown). However, as shown in FIG. The lower part of the part 21 and the lower part 29 may be tied with a string or the like so as to be attached to the seat.

FIGS. 9 and 10 show still another embodiment.
Will be described.

An automobile seat cover 30 for covering a seat with a built-in airbag is a cloth material having a side surface portion 32 covering a deployed portion of the airbag built in the seat and having a tissue portion 33 which is broken by the deployment output of the airbag. It is sewn via 34 to enable cutting.

The seat cover 30 has a front portion 31 for covering the backrest of the seat and a lower end of a back portion 36 for covering the backside of the seat, which are provided so that the airbag is deployed from the side. It is designed to be attached to the seat by tying it.

As shown in FIG. 10, the seat cover 30 has a sewn portion 35 of a front portion 31 covering the backrest portion and a side portion 32 covering the outer side surface of the seat. The sewn edges 38 and 39 are folded back and sewn with a sewing thread 40, and the edges of the folded sewn edges 38 and 39 of the front face portion 31 and the side face portion 32 are sewn through a sewing thread 41 via the fabric 34. And sew.

This cloth 34 has a tissue portion 33 similar to the tissue portion 24 that is broken by the deployment output of the airbag, similarly to the fabric shown in FIG. 7, and a pattern yarn is woven into the ground yarn of this tissue portion 33. The number of ground yarns to be woven into the ground yarn is reduced without causing the ground yarn to break at the deployment output of the airbag.

The tissue portion 33 of the cloth 34 which is broken by the deployment output of the airbag determines the number, texture, etc. according to the deployment output of the airbag, the tensile elongation and the tensile strength of the ground yarn, and determines other textures. The part is more easily broken.

The tissue portion 33 of the cloth cover 34 to which the seat cover 30 is sewn with a predetermined fabric portion covering the deployment portion of the airbag, which is broken by the deployment output of the airbag, is broken by the deployment output of the airbag. The side 32 of the seat cover 30 is cut open and the airbag is deployed in the desired deployment mode.

Further, as shown in FIG.
Although the portion to be broken by the deployment output of the airbag is a connecting portion between the side surface portion 32 and the front surface portion 31, in this embodiment, the side surface portion 32 is divided right and left at an intermediate portion, as shown in FIG. The sewn edges of the divided side portions 32a and 32b are folded back and sewn with sewing thread, and the end edge of the folded sewn edge is sewn with sewing thread 41 via the fabric 34.

This fabric 34 has a tissue portion 33 similar to the tissue portion 24 which is broken by the deployment output of the airbag, similar to the fabric shown in FIG. 7, and a pattern yarn is woven into the ground yarn of the tissue portion 33. The other ground yarn is knitted into one ground yarn without the other ground yarn, and the other ground yarn is broken by the deployment output of the airbag.

Also in this embodiment, when the airbag is deployed due to an impact such as a collision, the air of the cloth 34 sewn at the edges of the side surfaces 12a and 12b covering the side surface of the sheet at the deployment site of the airbag. Tissue part broken by bag deployment output
33 is broken and the side surface portion 12 of the seat cover 30 is cut open, and the airbag is deployed in an intended deployment mode.

Further, as shown in FIG. 11, the seat cover 30 is not limited to the seat cover 30 which is attached to the seat by connecting the lower portions of the front portion 31 and the rear portion 36 with a string or the like, as shown in FIG.
Can be covered with a hook-and-loop fastener (not shown) or the like.

In the embodiment shown in FIG. 12, the seat cover 30 has a front portion 31 covering the backrest portion and a sewn portion 35 of the side portion 32 covering the outer side surface of the seat, as shown in FIG. The sewn edges of the portion 31 and the side portion 32 are folded back and sewn with sewing thread, and the edge of the folded sewn edge of the front portion 31 and the side portion 32 is sewn with a sewing thread via the fabric 34. Sew. And
This cloth 34 has a tissue portion 33 similar to the tissue portion 24 that is broken by the deployment output of the airbag similarly to the fabric shown in FIG.
Without knitting the pattern yarn into the ground yarn of the textured portion 33, the other ground yarn woven into one ground yarn is reduced so that the other ground yarn is broken by the deployment output of the airbag.

Further, in the embodiment shown in FIG.
The intermediate portion 32 is divided into right and left portions at an intermediate portion, and the sewn edges of the divided side portions 32a and 32b are folded back and sewn with sewing threads, respectively, as in the embodiment shown in FIG. The edge of the receiving edge is sewn with a sewing thread via the cloth 34. This fabric 34 has a tissue portion 33 similar to the tissue portion 24 which is broken by the deployment output of the airbag, similarly to the fabric shown in FIG. 7, and weaves a pattern yarn between one ground yarn of the tissue portion 33. The other ground yarn is reduced without causing the other ground yarn to be reduced by the deployment output of the airbag.

Also in this embodiment, when the airbag is deployed due to an impact such as a collision, the air of the cloth 34 sewn at the edges of the side surfaces 12a and 12b covering the side surface of the seat at the deployment site of the airbag. Tissue part broken by bag deployment output
33 is broken and the side surface portion 12 of the seat cover 30 is cut open, and the airbag is deployed in an intended deployment mode.

The seat cover shown in FIGS.
20, the fabric of the fabric 34 of the seat cover 30 shown in FIGS. 11 to 13 is a knitted fabric, but is not limited to a knitted fabric, a nonwoven fabric having a tissue portion that is broken by the deployment output of an airbag, Woven fabric and synthetic leather can be used.In the case of non-woven fabric, the number of fibers in the tissue portion that is broken by the deployment output of the airbag is reduced, and in the case of textile fabric, the tissue portion that is broken by the deployment output of the airbag. In the case of synthetic leather, a tissue portion that is broken by the deployment output of an airbag is formed with a reduced thickness.

In each of the above embodiments, the seat covers 10, 20, 30 when the airbag is deployed from the side of the seat.
However, in the case where the airbag incorporated in the front seat is deployed rearward to protect a passenger in the rear seat, the seat covers 10, 20, and
The rear surface of the airbag 30 can be broken and cut open when the airbag is deployed.

Incidentally, the molding of the embodiment shown in FIG.
As shown in FIG. 14, FIG. 15, or FIG. 16, the tissue portion 24 that is broken by the airbag deployment output on the side portion 22 of the seat cover 20
The sides 22 are orthogonal to the front 21 and the back 29 so that are knitted in the knitting direction.

[0064]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in FIGS.
The sewing thread 18 of the sewn portions 14 and 19, which is broken by the deployment output of the airbag, is made of polyester filament 80de manufactured by Teijin Limited. A thread to which a system oil material is attached is used. This sewing thread
18 has a tensile strength in the range of 5 to 8 N, preferably 6.3 N, and a tensile elongation in the range of 40 to 90%, preferably 60%. The stitch pitch of the sewing thread 18 is 9 to 20 stitches / 3 cm, preferably 12 stitches / 3 cm.

Then, the tensile strength is 6.3 N and the tensile elongation is 60.
Using the above-described sewing thread 18%, the stitch pitch 12 stitches /
Seat cover sewn at 3cm (Example) and tensile strength
A seat cover (Comparative Example 1) sewn at a stitch pitch of 8 stitches / 3 cm using the above-described sewing thread 18 having a 6.3N and a tensile elongation of 60%, and a commercially available Onuki Textile Co., Ltd. having a strength of 12N and an elongation of 16%. An experiment was conducted with a seat cover (Comparative Example 2) sewn at a stitch pitch of 22 stitches / 3 cm using a sewing thread of polyester spun sewing thread # 60, and the results shown in Table 1 were obtained.

[0066]

[Table 1] According to the experimental results, the expected deployment mode of the airbag was obtained by the deployment output of the airbag in the example, and the expected deployment mode of the airbag was obtained even after washing 12 times. After 12 washes, the desired airbag deployment mode could not be obtained. In Comparative Example 2, the sewn portion of the seat cover was not broken by the deployment output of the airbag, and the desired deployment mode of the airbag could not be obtained. That is,
According to this experiment, the seat cover was broken by the deployment output of the airbag, and the tensile strength N of the sewn portion was low in Comparative Example 1 and too large in Comparative Example 2, and the Example obtained the optimal tensile strength N. Things.

[0067]

According to the invention 請 Motomeko 1, wherein, according to the present invention, normal time is sewing thread of sewn portion is broken by deployment output of the air bag of the seat cover is stress due to the large elongation tensile dispersion break In addition, the sewing thread has a low tensile strength, and the stitch pitch is adjusted according to the deployment output of the airbag and the tensile elongation and the tensile strength of the sewing thread. A predetermined part is cut open.

According to the second aspect of the present invention, the tissue portion in which the number of ground yarns to be woven into the knitted fabric of the seat cover is reduced and opened by the deployment output of the airbag which deploys due to an impact such as a collision, and the airbag is partially removed. It is surely developed in the expansion mode of the period.

According to the third aspect of the present invention, the tissue portion in which the number of ground yarns to be woven into the knitted fabric at the sewn portion of the seat cover by the deployment output of the airbag which is deployed by an impact such as a collision is reduced. Once opened, the airbag will deploy reliably in the intended deployment mode.

According to the fourth aspect of the present invention, the tissue portion of the sewn portion of the seat cover, in which the diameter thread or the weft thread of the woven fabric is roughened, is cut open by the deployment output of the airbag which is deployed by an impact such as a collision. This ensures that the airbag will deploy in the intended deployment mode.

According to the fifth aspect of the present invention, the tissue portion of the nonwoven fabric of the seat cover with less fibers is cut open by the deployment output of the airbag which is deployed by an impact such as a collision. It is surely expanded in the expansion mode.

According to the sixth aspect of the invention, the tissue portion where the thickness of the leather of the synthetic leather of the seat cover is thin is cut open by the deployment output of the airbag which is deployed by an impact such as a collision. It is surely developed in the expansion mode of the period.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automobile seat cover according to an embodiment of the present invention.

FIG. 2 is an enlarged explanatory view of a sewn seam portion of the automobile seat cover.

FIG. 3 is a perspective view of an automobile seat cover showing another embodiment of the present invention.

FIG. 4 is a perspective view of an automobile seat cover according to another embodiment of the present invention.

FIG. 5 is a perspective view of an automobile seat cover showing another embodiment of the present invention.

FIG. 6 is a perspective view of an automobile seat cover showing another embodiment of the present invention.

FIG. 7 is an enlarged explanatory view showing the weaving of a broken tissue portion of the automobile seat cover.

FIG. 8 is a perspective view of an automobile seat cover showing another embodiment of the present invention.

FIG. 9 is a perspective view of an automobile seat cover showing another embodiment of the present invention.

FIG. 10 is an enlarged explanatory view of a broken tissue portion of the automobile seat cover.

FIG. 11 is a perspective view of an automobile seat cover showing another embodiment of the present invention.

FIG. 12 is a perspective view of an automobile seat cover according to another embodiment of the present invention.

FIG. 13 is a perspective view of an automobile seat cover showing another embodiment of the present invention.

FIG. 14 is a model drawing of an automobile seat cover showing the embodiment of FIG. 8 of the present invention.

FIG. 15 is a plan view showing another example of the automobile seat cover showing the embodiment of FIG. 8 of the present invention.

FIG. 16 is a plan view showing still another example of the automobile seat cover according to the embodiment of FIG. 8 of the present invention.

FIG. 17 is a perspective view showing a deployed state of an airbag of an automobile seat.

[Explanation of symbols]

 10, 20, 30 Seat covers 14, 19 Sewing part 18 Sewing thread 33 Tissue part 34 Fabric

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuyuki Sakaki 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Yumiko Asada 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation ( 72) Inventor Genji Nakayama 3-4-1 Mihara, Ibaraki-shi, Osaka Teijin Limited Osaka Research Center (56) References JP-A-3-281455 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60R 21/20 B60N 2/42 B60R 21/22

Claims (6)

(57) [Claims] The backrest of a seat incorporating an airbag is provided.
A front part that covers, a back part that covers the back of the sheet, and
A side portion that covers an outer side surface of the sheet, wherein the sheet
An automotive seat cover attached to the, wherein the deployment portion of the airbag in the seat cover
A sewn portion between the front portion and the side portion or an intermediate portion of the side portion
Stitches that are broken by the deployment output of the airbag
A sewn portion is provided, and the sewn portion is usually less stressed than the sewn portions of other portions.
If the tensile elongation is large so that it is not dispersed and broken
The airbag is pulled so that it can be easily broken by the deployment output.
Low tensile strength , tensile strength 5-8N, tensile elongation 40-
Using a sewing thread in the range of 90%, the stitch pitch is 9 to 20.
An automobile seat cover characterized by being sewn in a range of stitch / 3cm. 2. A front portion covering a backrest of a seat containing an airbag, a back portion covering a backside of the seat, and
An automobile seat cover including a side surface portion that covers an outer side surface of the seat, the automobile seat cover being attached to the seat, wherein a connection portion between the front surface portion and the side surface portion of the deployment portion of the airbag in the seat cover or the side surface portion is provided. In the intermediate portion, a tissue portion incorporating a ground yarn of a knitted fabric that is broken by the deployment output of the airbag is provided, and the tissue portion is more developed by the deployment output of the airbag than the other tissue portions. Pattern yarn between one ground yarn to facilitate breakage
An automobile seat cover characterized in that the number of the other ground yarns to be woven into the one ground yarn without weaving is reduced. 3. A front portion covering a backrest of a seat containing an airbag, a back portion covering a backside of the seat, and
An automobile seat cover including a side surface portion that covers an outer side surface of the seat, the automobile seat cover being attached to the seat, wherein a sewing portion that is broken by the deployment output of the airbag is provided at a deployment portion of the airbag in the seat cover. , sewing attachment portion, weaving the edges of the sewing Chakuen unit with sewn in a sewing thread through the equivalent fabric knitted fabric, so liable to be broken in the deployment output of the air bag in the knitted fabric ground yarn An automobile seat cover characterized in that an organizational section is provided in which the number of parts is reduced. 4. A front portion covering a backrest of a seat containing an airbag, a back portion covering a backside of the seat, and
An automobile seat cover including a side surface portion that covers an outer side surface of the seat, the automobile seat cover being attached to the seat, wherein a sewing portion that is broken by the deployment output of the airbag is provided at a deployment portion of the airbag in the seat cover. , sewing attachment part, this together with the edge of the sewing Chakuen portion sewn by sewing thread through the equivalent fabric textile,径糸as easily be broken in the deployment output of the air bag to the textile material or An automobile seat cover having a textured portion with a coarse weft. 5. A front portion covering a backrest of a seat containing an airbag, a back portion covering a backside of the seat, and
An automobile seat cover including a side surface portion that covers an outer side surface of the seat, the automobile seat cover being attached to the seat, wherein a sewing portion that is broken by the deployment output of the airbag is provided at a deployment portion of the airbag in the seat cover. , sewing attachment portion, the edge of the sewing Chakuen unit with sewn in a sewing thread through those fabrics nonwoven, with a reduced fiber so liable to be broken in the deployment output of the air bag in the nonwoven fabric tissue An automobile seat cover characterized by having a part. 6. A front portion covering a backrest of a seat containing an airbag, a back portion covering a backside of the seat, and
An automobile seat cover including a side surface portion that covers an outer side surface of the seat, the automobile seat cover being attached to the seat, wherein a sewing portion that is broken by the deployment output of the airbag is provided at a deployment portion of the airbag in the seat cover. The sewn portion is formed by sewing an edge of the sewn edge with a sewing thread via a synthetic leather cloth and a thickness of the leather so that the synthetic leather can be easily broken by the deployment output of the airbag. An automobile seat cover characterized in that a thin tissue portion is provided.