Seat cover

Abstract

To provide a seat cover capable of facilitating the sewing of a first cloth member and a second cloth member and securing the degree of freedom of design.SOLUTION: A pair of a front outer fabric 14 and an outer side fabric 15 sewn so as to substantially coincide with the vicinity of a top portion T of a side airbag side 3b that breaks the vicinity of the top portion T of an outer side support side 5a and inflates and deploys, an inner side fabric 18 sewn to edge ends of the front outer fabric 14 facing each other in a deployment direction X of the side airbag side 5a, and a front center fabric 11 sewn to the front outer fabric 14 provided with the inner side fabric 18 are provided, wherein the front center fabric 11 is composed of an upper divided fabric 111 and a lower divided fabric 112, a portion where the upper divided fabric 111 and the lower divided fabric 112 are sewn is a divided sewn portion 113, and the front outer fabric 14 includes a pair of fabric-side protrusions 141 for sewing the inner side fabric 18 at positions separated by a predetermined distance across the divided sewn portion 113.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a seat cover that is attached to a vehicle seat on which a passenger sits in a vehicle such as an automobile. [Background technology]

[0002] 2. Description of the Related Art Seat covers that are detachably attached to vehicle seats having side airbags built into the sides of the seatbacks are known, and are designed to accommodate the inflation and deployment of the side airbags.

[0003] For example, Patent Document 1 describes a seat cover in which the stitching between a pair of first fabric members covering the side of the seat back roughly coincides with the tearing start point of the seat back that breaks when a side airbag built into the side of the seat back inflates and deploys.

[0004] The seat cover of Patent Document 1 has webbing sewn to the edges of the first fabric member that face each other in the deployment direction of the side airbag, so that the webbing can suppress the extension of the first fabric member when the side airbag inflates and deploys. This allows the stitched portion between the first fabric members to be reliably broken, thereby enabling the side airbag to inflate and deploy outside the seat cover.

[0005] Incidentally, a seat cover to be attached to a vehicle seat includes a second fabric member that is sewn to a first fabric member. This second fabric member may be made up of a plurality of divided fabric pieces that are divided in a direction intersecting the edge of the first fabric member from the viewpoint of design or the like.

[0006] In this case, the sewn portion between the first fabric member and the webbing may overlap with the sewn portion between the divided fabrics, which may reduce the workability of sewing the first fabric member and the webbing and the first fabric member and the second fabric member.

[0007] Therefore, it is conceivable to provide a protruding portion that protrudes from the first fabric member over a predetermined range at the edge of the first fabric member of the seat cover and sew the webbing to the protruding portion, or to configure the second fabric member so that the sewn portion between the divided fabrics does not overlap with the sewn portion between the first fabric member and the webbing, thereby preventing the sewn portion between the first fabric member and the webbing from overlapping with the sewn portion between the divided fabrics.

[0008] However, if a protrusion is provided on the first fabric member, the edge of the second fabric member will be hidden by the protrusion, making it difficult to align the edges of the first fabric member and the second fabric member, and there is a risk that the first fabric member and the second fabric member will become misaligned.

[0009] On the other hand, if the sewn portions between the divided fabrics constituting the second fabric member are designed not to overlap with the sewn portions between the first fabric member and the webbing, it is necessary to cut the second fabric member so that the sewn portions between the divided fabrics are positioned at a position other than the sewn portions between the first fabric member and the webbing, which could reduce the freedom of design of the seat cover. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Publication No. 2020-19408 Summary of the Invention [Problem to be solved by the invention]

[0011] In view of the above-mentioned problems, an object of the present invention is to provide a seat cover that can easily sew a first fabric member and a second fabric member together and that ensures freedom of design. [Means for solving the problem]

[0012] The present invention relates to a seat cover that is removably attached to a vehicle seat having a side airbag that is built into a side portion of a seat back and that inflates and deploys by breaking a tear initiation point provided on the side portion of the seat back, the seat cover comprising: a pair of first fabric members that cover the side portions of the seat back and have edges sewn together so that they substantially coincide with the tear initiation point; webbing that is sewn to edges of the first fabric members that face each other in the deployment direction of the side airbag in a side view and has lower stretchability than the first fabric members; and a second fabric member that is sewn to a seam that is one edge of the first fabric member on which the webbing is provided, the second fabric member being composed of divided fabric that is divided in a direction intersecting the seam, and the portion where the edges of the divided fabrics that intersect the seam are sewn together is defined as a boundary sewn portion, and the seam portion of the first fabric member comprises a pair of sewn portions to which the webbing is sewn at positions spaced a predetermined distance apart across the boundary sewn portion. The sewn portion is formed to protrude from the edge of the seam allowance portion of the first fabric member. It is characterized by the fact that

[0013] The rupture initiation point is the point at which the side airbag first ruptures when it begins to inflate and deploy, and is, for example, a predetermined point in a seam of the seat cover of a vehicle seat.

[0014] According to this invention, the first fabric member and the second fabric member can be easily sewn together, and a degree of freedom in design can be ensured. In more detail, the seat cover has a webbing sewn to the sewn portion of the first fabric member located at a predetermined distance from the boundary sewing portion where the divided fabrics are sewn together, so that the edge of the first fabric member and the edge of the second fabric member between the sewn portions can be easily exposed.

[0015] This allows the seat cover to be sewn with the edges of the first fabric member and the second fabric member aligned, reducing the risk of the first fabric member and the second fabric member becoming misaligned.

[0016] Furthermore, since the boundary stitching portion of the second fabric member does not overlap with the stitching portion between the first fabric member and the webbing, the boundary stitching portion of the second fabric member can be easily positioned between the pair of stitching portions between the first fabric member and the webbing.

[0017] Therefore, the seat cover can easily sew the first fabric member and the second fabric member together, and can ensure freedom of design. Furthermore, since the seam allowance for sewing the webbing can be reliably secured in the seam allowance portion of the first fabric member, the webbing can be easily sewn to the first fabric member.

[0018] This invention also a seat cover that is removably attached to a vehicle seat having a side airbag that is built into a side portion of a seat back and that inflates and deploys by breaking a tear initiation point provided on the side portion of the seat back, the seat cover comprising: a pair of first fabric members that cover the side portions of the seat back and have edges sewn together so that they substantially coincide with the tear initiation point; webbing that is sewn to edges of the first fabric members that face each other in the deployment direction of the side airbag in a side view and has lower elasticity than the first fabric members; and a second fabric member that is sewn to a seam that is one edge of the first fabric member on which the webbing is provided, the second fabric member being composed of divided fabric that is divided in a direction intersecting the seam, and a portion where the edges of the divided fabrics that intersect the seam are sewn together forms a boundary sewn portion, and the seam portion of the first fabric member comprises a pair of sewn portions to which the webbing is sewn at positions spaced a predetermined distance apart across the boundary sewn portion, The webbing is composed of a substantially rectangular webbing main body portion disposed across the edge ends of the first fabric member facing each other in the deployment direction, and webbing protrusions protruding from the webbing main body portion at positions corresponding to the pair of sewn portions, and the webbing protrusions are sewn to the sewn portions. It is characterized by the fact that

[0019] According to this invention, the webbing protrusions of the webbing can function as seam allowances, so that the webbing can be easily sewn to the seam allowances of the first fabric member. In addition, even if the webbing is sewn to the first fabric member before sewing the first fabric member to the second fabric member, the edge of the first fabric member is less likely to be hidden by the webbing main body, making it easier to sew the first fabric member to the second fabric member.

[0020] In another aspect of the present invention, the webbing protrusions may be provided at both corners of the webbing body in a direction along the edge of the seam allowance.

[0021] According to this invention, a wide distance can be secured between the pair of webbing protrusions. This allows the boundary sewn portion of the second fabric member to be positioned at a more arbitrary position in the seat cover, ensuring greater freedom in design.

[0022] This invention also a seat cover that is removably attached to a vehicle seat having a side airbag that is built into a side portion of a seat back and that inflates and deploys by breaking a tear initiation point provided on the side portion of the seat back, the seat cover comprising: a pair of first fabric members that cover the side portions of the seat back and have edges sewn together so that they substantially coincide with the tear initiation point; webbing that is sewn to edges of the first fabric members that face each other in the deployment direction of the side airbag in a side view and has lower elasticity than the first fabric members; and a second fabric member that is sewn to a seam that is one edge of the first fabric member on which the webbing is provided, the second fabric member being composed of divided fabric that is divided in a direction intersecting the seam, and a portion where the edges of the divided fabrics that intersect the seam are sewn together forms a boundary sewn portion, and the seam portion of the first fabric member comprises a pair of sewn portions to which the webbing is sewn at positions spaced a predetermined distance apart across the boundary sewn portion,The seam allowance portion of the first fabric member is provided with a mark for determining the position of the second fabric member between the pair of sewn portions. It is characterized by the fact that

[0023] This invention makes it easy to align the first fabric member and the second fabric member using the markers, thereby further reducing the risk of the first fabric member and the second fabric member becoming misaligned. [Effects of the Invention]

[0024] According to this invention, it is possible to provide a seat cover that can easily sew the first fabric member and the second fabric member together and that ensures freedom of design. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a perspective view showing the appearance of a vehicle seat as viewed from above and in front; [Figure 2] FIG. 2 is an external perspective view showing the appearance of a seat back and a seat cover. [Figure 3] 1 is an external perspective view showing the appearance of a vehicle seat to which a seat cover is attached; [Figure 4] FIG. 2 is an explanatory diagram illustrating the appearance of the seat cover. [Figure 5] FIG. 4 is a schematic view showing a main part of the seat cover as viewed from the back side. [Figure 6] FIG. 10 is an explanatory diagram illustrating the relationship between the front center fabric and the inner strength fabric. [Figure 7] FIG. 3 is a cross-sectional view showing a cross section of the seat cover taken along the unfolding direction. [Figure 8] 1 is a cross-sectional view showing a vehicle seat with a seat cover attached thereto; [Figure 9] 1 is a side view showing the outer side in the vehicle width direction of a vehicle seat with a seat cover attached thereto; [Figure 10] FIG. 10 is an external perspective view showing the appearance of a seat cover according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0026] An embodiment of the present invention will be described below with reference to the drawings. The seat cover 10 of this embodiment is a seat cover that is attached to the seat back 3 of a vehicle seat 1 in which an occupant sits in a vehicle such as an automobile. Such a seat cover 10 will be described in detail with reference to Figs. 1 to 9.

[0027] Note that Figure 1 shows an external perspective view of the vehicle seat 1, Figure 2 shows an external perspective view of the seat back 3 and the seat cover 10, Figure 3 shows an external perspective view of the vehicle seat 1 with the seat cover 10 attached, and Figure 4 shows an explanatory diagram explaining the external appearance of the seat cover 10. Furthermore, FIG. 5 is a schematic diagram showing the main parts of the seat cover 10 as seen from the back, and FIG. 6 is an explanatory diagram illustrating the relationship between the front outer fabric 14 and the inner webbing 18.

[0028] In addition, Figure 7 shows a cross-sectional view of the seat cover 10 along the deployment direction X, Figure 8 shows a cross-sectional view of the vehicle seat 1 equipped with the seat cover 10, and Figure 9 shows a side view of the vehicle seat 1 equipped with the seat cover 10 on the outer side in the vehicle width direction. In FIG. 7, FIG. 7(b) shows an enlarged view of the α portion of FIG. 7(a).

[0029] Furthermore, in Figure 4, Figure 4(a) shows an external perspective view of the seat cover 10 as seen from above and in front of the vehicle and from the outside in the vehicle width direction, and Figure 4(b) shows an external perspective view of the seat cover 10 as seen from above and in front of the vehicle and from the inside in the vehicle width direction. In addition, FIG. 8 shows a vertical cross section of the vehicle seat 1 taken along the vehicle front-rear direction at approximately the center in the vehicle width direction.

[0030] In addition, in the figure, arrows Fr and Rr indicate the fore-and-aft direction of the vehicle, with arrow Fr indicating the front of the vehicle and arrow Rr indicating the rear of the vehicle, and arrows IN and OUT indicate the width direction of the vehicle, with arrow IN indicating the inside of the vehicle width direction and arrow OUT indicating the outside of the vehicle width direction.

[0031] First, the vehicle seat 1 is, for example, a driver's seat in a right-hand drive vehicle, and as shown in Figure 1, is composed of a seat cushion 2 on which an occupant sits, a seat back 3 that is erected at the rear end of the seat cushion 2 so as to be able to tilt freely, and a headrest 4 attached to the upper surface of the seat back 3.

[0032] Furthermore, as shown in Figure 1, the seat back 3 is formed so that the inner side and outer side in the vehicle width direction bulge outward and toward the front of the vehicle as they move downward relative to the front surface with which the occupant's back comes into contact.

[0033] Of the side portions that bulge toward the front of the vehicle as they move downward, the bulging side portions on the inner side in the vehicle width direction are designated as inner side supports 3a that support the seated occupant from the inner side in the vehicle width direction, and the bulging side portions on the outer side in the vehicle width direction are designated as outer side supports 3b that support the seated occupant from the outer side in the vehicle width direction.

[0034] In addition, the outer side support 3b of the seat back 3 is equipped with a side airbag unit 5, as shown by the two-dot chain line in Figure 1, which protects the body of the occupant from the impact of the collision when the vehicle collides with an object.

[0035] More specifically, the seat back 3 is composed of a metal seat back frame (not shown) that forms the skeleton of the seat back 3, and an elastic cushioning material (not shown) that covers the seat back frame, which is covered with a seat skin that provides the exterior design surface.

[0036] The seat cover of the seat back 3 is formed by sewing together a plurality of cover materials as shown in FIG.

[0037] Specifically, as shown in FIG. 1, the seat upholstery of the seat back 3 is composed of a front center upholstery material 31 extending from the upper surface of the seat back 3 to the lower end of the front surface with which the occupant's back comes into contact, a front inner upholstery material 32 arranged on the inside of the front center upholstery material 31 in the vehicle width direction, an inner side upholstery material 33 forming the inside side surface in the vehicle width direction, a front outer upholstery material 34 arranged on the outside of the front center upholstery material 31 in the vehicle width direction, an outer side upholstery material 35 forming the outside side surface in the vehicle width direction, and a back upholstery material (not shown) forming the back surface.

[0038] As shown in FIG. 1, the seat back 3 has a seat upholstery covering the inner side support 3a that is made up of a front inner upholstery material 32 and an inner side surface upholstery material 33, and a seat upholstery covering the outer side support 3b that is made up of a front outer upholstery material 34 and an outer side surface upholstery material 35. The front outer surface covering material 34 and the outer side surface covering material 35 are sewn together with a sewing thread that breaks under a tensile load lower than the inflation pressure when the side airbag unit 5 is inflated and deployed.

[0039] As shown in FIG. 1, the seat upholstery of the seat back 3 formed by sewing together a plurality of upholstery materials in this manner has a stitching line S1 which is the stitching portion between the front center upholstery material 31 and the front inner upholstery material 32, a stitching line S2 which is the stitching portion between the front inner upholstery material 32 and the inner side upholstery material 33, and a stitching line S3 which is the stitching portion between the front center upholstery material 31 and the front outer upholstery material 34. Furthermore, the seat covering of the seat back 3 is formed with a stitching line S4 which is the stitching portion between the front inner upholstery material 32 and the outer side upholstery material 35, a stitching line S5 which is the stitching portion between the outer side upholstery material 35 and the back upholstery material, and a stitching line (not shown) which is the stitching portion between the back upholstery material and the inner side upholstery material 33.

[0040] 1, the side airbag unit 5 is built into the lower part of the outer side support 3b. This side airbag unit 5 is configured so that, when the vehicle collides with an object, the sewing thread sewing the front outer upholstery material 34 and the outer side surface upholstery material 35 together is ruptured by the inflation pressure of the side airbag 5a (see FIG. 8), causing the side airbag 5a to inflate and deploy to the outside from the sewing line S4 which is the stitching portion between the front outer upholstery material 34 and the outer side surface upholstery material 35.

[0041] More specifically, the side airbag unit 5 is configured such that the inflation pressure breaks the stitching near the top T of the outer side support 3b on the front side of the vehicle, forming an opening at the stitching line S4, which is the stitching portion between the front outer upholstery material 34 and the outer side surface upholstery material 35, and inflates and deploys the side airbag 5a in the deployment direction X (see Figure 8).

[0042] The deployment direction X is a direction from the opening toward the front of the vehicle and slightly toward the upper side of the vehicle in a side view, and is a direction from the opening toward the front of the vehicle and slightly toward the outside in the vehicle width direction in a plan view.

[0043] Next, the seat cover 10 to be attached to the seat back 3 of the vehicle seat 1 having the above-described configuration will be described. As shown in FIGS. 2 and 3, the seat cover 10 is formed in a generally bag-like shape by sewing together a plurality of pieces of fabric formed in a shape that fits closely to the seat back 3.

[0044] More specifically, as shown in Figures 2 to 4, the seat cover 10 is composed of a front center fabric 11 covering the front center upholstery material 31 of the seat back 3, a front inner fabric 12 covering the front inner upholstery material 32 of the seat back 3, an inner side fabric 13 covering the inner side upholstery material 33 of the seat back 3, a front outer fabric 14 covering the front outer upholstery material 34 of the seat back 3, an outer side fabric 15 covering the outer side upholstery material 35 of the seat back 3, and a back fabric 16 (see Figure 7) covering the back upholstery material of the seat back 3.

[0045] As shown in Figures 2 to 4, the seat cover 10, which is made by sewing multiple fabrics together in this manner, has a stitching line L1 where the front center fabric 11 and the front inner fabric 12 are sewn together, a stitching line L2 where the front inner fabric 12 and the inner side fabric 13 are sewn together, a stitching line L3 where the front center fabric 11 and the front outer fabric 14 are sewn together, a stitching line L4 where the front outer fabric 14 and the outer side fabric 15 are sewn together, a stitching line L5 where the outer side fabric 15 and the back fabric 16 are sewn together, and a stitching line L6 where the back fabric 16 and the inner side fabric 13 are sewn together.

[0046] In addition, the front center fabric 11, front inner fabric 12, front outer fabric 14, inner side fabric 13, outer side fabric 15, and back fabric 16 of the seat cover 10 are formed in similar shapes that are slightly larger than the front center upholstery material 31, front inner upholstery material 32, front outer upholstery material 34, inner side upholstery material 33, outer side upholstery material 35, and back upholstery material (not shown) of the vehicle seat 1, respectively.

[0047] Therefore, when the seat cover 10 is attached to the seat back 3, the stitching lines L1, L2, L3, L4, L5, and L6 of the seat cover 10 approximately coincide with the stitching lines S1, S2, S3, S4, and S5 of the seat back 3, and the stitching line (not shown) that is the stitching portion between the back cover material and the inner side cover material 33.

[0048] Here, to facilitate the following explanation, as shown in Figure 7, in the front outer fabric 14 of the above-mentioned seat cover 10, the seam allowance at the inner edge in the vehicle width direction that is sewn to the front central fabric 11 is referred to as inner seam allowance 14a, and the seam allowance at the outer edge in the vehicle width direction that is sewn to the outer side fabric 15 is referred to as outer seam allowance 14b. In addition, in the front center fabric 11 described above, the seam allowance at the outer edge in the vehicle width direction that is sewn to the inner seam allowance 14a of the front outer fabric 14 is referred to as the outer seam allowance 11a.

[0049] Furthermore, in the outer side surface fabric 15 described above, the rear seam allowance sewn to the back surface fabric 16 is referred to as rear seam allowance 15a, and the front seam allowance sewn to the front center fabric 11 is referred to as front seam allowance 15b.

[0050] As shown in FIGS. 3 to 5, the front center fabric 11 of the seat cover 10 is formed by sewing together two fabric members that are separated in the vertical direction of the vehicle. In detail, the front central fabric 11 is divided in the vertical direction of the vehicle along the width direction of the vehicle near the top T, and is composed of an upper divided fabric 111 that constitutes the upper side of the vehicle and a lower divided fabric 112 that constitutes the lower side of the vehicle (see Figure 3).

[0051] As shown in Figure 5, this front center fabric 11 has an upper fabric seam allowance 111a, which is the edge of the upper divided fabric 111 on the lower side of the vehicle, and a lower fabric seam allowance 112a, which is the edge of the lower divided fabric 112 on the upper side of the vehicle, sewn together along the vehicle width direction. The sewn portion where the upper fabric seam allowance 111 a of the upper divided fabric 111 and the lower fabric seam allowance 112 a of the lower divided fabric 112 are sewn together is referred to as a divided sewn portion 113 .

[0052] Further, the front outer fabric 14 of the seat cover 10 described above is a single fabric member that is sewn to the outer seam allowance 11a of the front central fabric 11, as shown in FIG.

[0053] The outer seam 14b of the front outer fabric 14, which is the outer edge in the vehicle width direction, is folded back toward the inside in the vehicle width direction so that the back surface of the fabric faces the inside (see FIGS. 5 and 7).

[0054] As shown in Figure 5, the inner seam allowance 14a on the inner side in the vehicle width direction of the front outer fabric 14 is provided with a pair of fabric side protrusions 141 protruding from the edge at positions spaced a predetermined distance apart in the vertical direction of the vehicle, and a triangular cutout 142 formed by cutting out the edge between the pair of fabric side protrusions 141 in an approximately triangular shape.

[0055] Specifically, the fabric-side protrusions 141 are protrusions provided in pairs at positions spaced apart in the vehicle up-down direction from a position corresponding to the apex T. As shown in Fig. 6, the fabric-side protrusions 141 are formed in a substantially rectangular shape with long sides in the vehicle up-down direction and short sides in the vehicle width direction. Furthermore, one of the long sides of the fabric-side protrusions 141 is provided integrally with the edge of the inner seam allowance 14a.

[0056] In addition, for the fabric side protrusion 141, the length in the vehicle vertical direction along the inner seam allowance 14a of the front outer fabric 14 is defined as the protrusion width W1, and the length in the vehicle width direction from the edge of the inner seam allowance 14a of the front outer fabric 14 to the tip of the fabric side protrusion 141 is defined as the protrusion length H1. In addition, the distance between the pair of fabric-side protrusions 141 in the vehicle up-down direction is defined as a protrusion distance W2 (see FIG. 5).

[0057] In addition, the triangular cutout 142 is formed by cutting out the edge of the inner seam allowance 14a of the front outer fabric 14 in an approximately triangular shape between a pair of fabric side protrusions 141, more specifically, at approximately the center in the vertical direction of the vehicle at the protrusion spacing W2 of the fabric side protrusions 141.

[0058] This triangular cutout 142 is provided as a mark for alignment when sewing together the front center fabric 11 and the front outer fabric 14. In detail, as shown in Figure 5, the triangular cutout portion 142 is formed at a position that is approximately aligned with the divided sewn portion 113 of the front center fabric 11 in the vertical direction of the vehicle when the front center fabric 11 and the front outer fabric 14 are sewn together.

[0059] Such a front outer fabric 14 is configured such that the split sewn portion 113 of the front central fabric 11 is aligned with the position of the triangular cutout 142, so that a pair of fabric side protrusions 141 are positioned at intervals in the vertical direction of the vehicle, sandwiching the split sewn portion 113 therebetween.

[0060] The outer side fabric 15 is a single piece of fabric sewn to the outer edge of the front outer fabric 14 in the vehicle width direction, and the front seam 15b, which is the edge on the front side of the vehicle, is folded back toward the inside in the vehicle width direction so that the back surfaces of the fabric face each other (see Figures 5 and 6).

[0061] The front seam 15b of the outer side surface fabric 15 configured in this way is sewn to the outer seam 14b of the front outer fabric 14 described above, and this sewn portion forms a stitching line L4 (see FIG. 5).

[0062] 4 to 9, outer side fabrics 15 of the seat cover 10 are sewn with outer webbing 17, which are strips that are generally rectangular in side view and are elongated in the deployment direction X. Furthermore, inner webbing 18, which are strips that are generally rectangular in side view and are slightly longer in the vehicle up-down direction than the deployment direction X, are sewn with the front outer fabric 14 of the seat cover 10.

[0063] In this seat cover 10, the outer force cloth 17 restrains the stretching of the outer side fabric 15 due to the inflation pressure of the side airbag 5a, and the inner force cloth 18 restrains the stretching of the front outer fabric 14 due to the inflation pressure of the side airbag 5a.

[0064] The outer and inner force cloths 17 and 18 are sewn to the outer side surface fabric 15 and the front outer fabric 14, respectively, with sewing thread having a tensile strength higher than the inflation pressure of the side airbag 5a.

[0065] First, the outer webbing 17 will be described in detail. The outer webbing 17 is formed in a strip shape extending in the deployment direction X and having a width slightly narrower than the projection interval W2 between the pair of webbing projections 182. The outer webbing 17 is made of a nylon or polyester fabric material that has lower stretchability than the outer side fabric 15 of the seat cover 10 and a tensile strength higher than the inflation pressure of the side airbag 5a. As shown in FIG. 7, the outer webbing 17 is formed to have a length in the deployment direction X that is slightly longer than the length of the outer side fabrics 15 in the deployment direction X. More specifically, as shown in FIG. 5, the outer webbing 17 is formed to have a length in the expansion direction X that is slightly longer than the length in the expansion direction X from the surface of the front seam 15b of the outer side surface fabric 15 to the back surface of the rear seam 15a when the outer side surface fabric 15 is expanded into a substantially flat plate shape.

[0066] For example, the outer force cloths 17 are formed to a length in the unfolding direction X that allows the outer side surface fabrics 15 to bend in an arched shape so that the surfaces of the outer side surface fabrics 15 face each other. Alternatively, the outer force cloths 17 are formed to a length in the unfolding direction X that allows a rod having a thickness of about one finger to be inserted between the outer side surface fabrics 15 and the outer side surface fabrics 15 when there is no slack in the outer side surface fabrics 15.

[0067] Furthermore, as shown in FIG. 9, the outer force cloth 17 is disposed so that its front end edge is located at approximately the same position in the vehicle up-down direction as the vicinity of the top T of the outer side support 3b, and is sewn to the outer side surface fabric 15 so as to connect the front seam allowance 15b and the rear seam allowance 15a in the deployment direction X of the side airbag 5a.

[0068] Specifically, as shown in Figures 5 and 7, the rear end of the outer force cloth 17 is sewn to the back surface of the rear seam allowance 15a of the outer side surface fabric 15, and the front end is sewn to the front surface of the front seam allowance 15b of the outer side surface fabric 15.

[0069] On the other hand, as shown in FIG. 5, the inner force cloth 18 is formed so that the center in the vehicle up-down direction on the inner side in the vehicle width direction is generally concave and recessed outward in the vehicle width direction. Like the outer force cloth 17, the inner force cloth 18 is made of a nylon or polyester fabric material that has lower elasticity than the front outer fabric 14 of the seat cover 10 and a tensile strength higher than the inflation pressure of the side airbag 5a.

[0070] As shown in FIG. 7, the inner force cloth 18 is formed to have a length in the deployment direction X that is slightly longer than the length of the front outer fabric 14 in the deployment direction X. More specifically, the inner force cloth 18 is formed to have a length in the expansion direction X that is slightly longer than the length in the expansion direction X from the surface of the outer seam allowance 14b of the front outer fabric 14 to the back surface of the fabric-side protrusion 141 of the front outer fabric 14 when it is expanded into a substantially flat plate shape.

[0071] For example, the inner force cloth 18 is formed with a length in the expansion direction X that allows it to bend so that the edges of the front outer fabric 14 in the expansion direction X face each other. Alternatively, the inner force cloth 18 is formed with a length in the expansion direction X that allows a rod with a thickness of about one finger to be inserted between the inner force cloth 18 and the front outer fabric 14 when there is no slack in the front outer fabric 14.

[0072] As shown in FIG. 5, the inner webbing 18 has its inner edge in the vehicle width direction sewn to the inner seam allowance 14a and its outer edge in the vehicle width direction sewn to the outer seam allowance 14b. 5 and 6, the sewn portion between the inner force cloth 18 and the inner seam allowance 14a is indicated by a broken line.

[0073] As shown in Figure 5, the inner force cloth 18 sewn in this manner is configured in a generally concave shape, consisting of a generally rectangular inner force cloth main body 181 and a pair of force cloth protrusions 182 that protrude inward in the vehicle width direction from the inner force cloth main body 181.

[0074] The inner force cloth main body 181 is formed in a roughly rectangular shape having one side extending along the inner seam allowance 14a on the inner side in the vehicle width direction and one side extending along the outer seam allowance 14b on the outer side in the vehicle width direction. The inner force cloth body 181 is formed to have a length in the deployment direction X that is slightly shorter than the front outer fabric 14 in the deployment direction X.

[0075] On the other hand, the pair of webbing protrusions 182 are, as shown in FIGS. 5 and 6, substantially rectangular protruding pieces that protrude from both corners of the inner webbing main body 181 in the vehicle vertical direction. As shown in FIGS. 5 and 6, the webbing protrusion 182 is formed in a substantially rectangular shape similar to the fabric-side protrusion 141 of the front outer fabric 14.

[0076] Here, in the webbing protrusion 182, as shown in Figure 6, if the length in the direction along the inner edge of the inner webbing main body 181 on the vehicle width direction is defined as the protrusion width W3 of the webbing protrusion 182, the protrusion width W3 is formed slightly shorter than the protrusion width W1 of the fabric side protrusion 141.

[0077] Furthermore, in the webbing protrusion 182, if the length along the vehicle width direction from the inner edge of the inner webbing main body 181 on the vehicle width direction to the tip of the webbing protrusion 182 is defined as the webbing length H2, the webbing length H2 is formed longer than the webbing length H1 of the fabric side protrusion 141.

[0078] In the inner force cloth 18 configured as described above, the outer side in the vehicle width direction of the inner force cloth main body 181 is sewn to the outer seam allowance 14b of the front outer fabric 14, and the force cloth protrusion 182 is sewn to the fabric side protrusion 141 of the front outer fabric 14 (see Figures 5 and 7). Due to this configuration, the seat cover 10 has the webbing protrusion 182 of the inner webbing 18 sewn to the fabric side protrusion 141 of the front outer fabric 14, so that in the vertical direction of the vehicle, the divided sewn portion 113 of the front central fabric 11 is located between the pair of webbing protrusions 182.

[0079] In addition, the seat cover 10 is arranged such that the inner edge of the inner force cloth main body 181 of the inner force cloth 18 on the vehicle width direction is located at a position spaced apart on the outer side of the vehicle width direction from the inner seam allowance 14a of the front outer fabric 14 and the outer seam allowance 11a of the front central fabric 11.

[0080] Due to this positional relationship, when sewing the seat cover 10, the divided sewn portion 113 of the front center fabric 11 and the triangular cutout portion 142 of the front outer fabric 14 are less likely to be hidden behind the inner force fabric 18 on the back side of the inner force fabric main body 181, making it easier to align the front center fabric 11 and the front outer fabric 14.

[0081] Furthermore, the sewn portion between the inner force cloth 18 and the inner seam allowance 14a does not overlap with the sewing line L3 which is the sewn portion between the front center fabric 11 and the front outer fabric 14, making it easy to sew together the front center fabric 11, the front outer fabric 14, and the inner force cloth.

[0082] As described above, the seat cover 10 is built into the outer side support 3b of the seat back 3 and is removably attached to a vehicle seat 1 having a side airbag 5a that inflates and deploys by breaking the vicinity of the top T of the outer side support 3b provided on the outer side support 3b.

[0083] This seat cover 10 covers the outer side supports 3b and includes a pair of front outer fabrics 14 and outer side fabrics 15 whose edges are sewn together so that they are approximately aligned with the vicinity of the tops T of the outer side supports 3b, an inner force fabric 18 which is sewn to the outer seam 14b and the fabric side protrusion 141, which are edges of the front outer fabrics 14 that face each other in the deployment direction X of the side airbag 5a in a side view, and which has lower elasticity than the front outer fabrics 14, and a front center fabric 11 which is sewn to the inner seam 14a of the front outer fabric 14, which is one edge of the front outer fabric 14 to which the inner force fabric 18 is attached.

[0084] Furthermore, the front center fabric 11 is composed of an upper divided fabric 111 and a lower divided fabric 112 that are divided in the vehicle vertical direction along the vehicle width direction that intersects with the inner seam allowance 14a of the front outer fabric 14.

[0085] The portion where the upper fabric seam allowance 111a of the upper divided fabric 111 and the lower fabric seam allowance 112a of the lower divided fabric 112 that intersect with the inner seam allowance 14a of the front outer fabric 14 are sewn together forms a divided sewn portion 113, and the inner seam allowance 14a of the front outer fabric 14 has a pair of fabric side protrusions 141 that sew the inner force cloth 18 to at a predetermined distance on either side of the divided sewn portion 113.

[0086] This makes it easy to sew the front outer fabric 14 and outer side fabrics 15 to the front center fabric 11, and also ensures freedom of design. In more detail, the seat cover 10 has the inner force fabric 18 sewn to the fabric side protrusion 141 of the front outer fabric 14, which is located at a predetermined distance from the divided sewn portion 113 where the upper divided fabric 111 and the lower divided fabric 112 are sewn together, so that the edge of the first fabric member and the edge of the second fabric member between the sewn portions can be easily exposed.

[0087] This allows the seat cover 10 to be sewn with the inner seam allowance 14a of the front outer fabric 14 and the outer seam allowance 11a of the front center fabric 11 aligned, thereby reducing the risk of misalignment between the front outer fabric 14 and the front center fabric 11.

[0088] Furthermore, in the seat cover 10, the divided sewn portion 113 of the front center fabric 11 does not overlap with the stitched portion between the front outer fabric 14 and the inner force fabric 18, so the divided sewn portion 113 of the front center fabric 11 can be easily positioned between the pair of stitched portions between the front outer fabric 14 and the inner force fabric 18.

[0089] Therefore, the seat cover 10 can easily sew the front outer fabric 14 and the front center fabric 11 together, and also ensures freedom of design.

[0090] The fabric-side protrusion 141 is formed so as to protrude from the edge of the inner seam allowance 14 a of the front outer fabric 14 . This ensures that the seam allowance for sewing the inner force cloth 18 is secured to the inner seam allowance 14a of the front outer fabric 14, making it easy to sew the inner force cloth 18 to the front outer fabric 14 and the outer side surface fabric 15.

[0091] The inner force cloth 18 is composed of an approximately rectangular inner force cloth main body 181 that is arranged across the edge of the opposing front outer fabric 14 in the unfolding direction X, and a force cloth protrusion 182 that protrudes from the inner force cloth main body 181 at a position corresponding to a pair of fabric side protrusions 141, and the force cloth protrusion 182 is sewn to the fabric side protrusions 141.

[0092] This allows the webbing protrusion 182 of the inner webbing 18 to function as a seam allowance, making it possible to easily sew the webbing protrusion 182 to the fabric side protrusion 141 of the inner seam allowance 14a of the front outer fabric 14. In addition, even if the inner force cloth 18 is sewn to the front outer fabric 14 before sewing the front outer fabric 14 and the front central fabric 11 together, the inner seam allowance 14a, which is the edge of the front outer fabric 14, can be prevented from being hidden by the inner force cloth main body 181, making it easier to sew the front outer fabric 14 and the front central fabric 11 together.

[0093] Further, webbing protrusions 182 are provided at both corners of the inner webbing body 181 in a direction along the edge of the inner seam allowance 14a of the front outer fabric 14.

[0094] This allows a wide gap to be secured between the pair of webbing protrusions 182. This allows the divided sewn portion 113 of the seat cover 10 to be positioned at any desired position, ensuring greater freedom in design. The inner seam allowance 14a of the front outer fabric 14 has a triangular notch 142 between a pair of fabric-side protrusions 141 for positioning the front central fabric 11.

[0095] This makes it easier to align the front outer fabric 14 and the front central fabric 11 using the triangular cutout portion 142, thereby further reducing the risk of the front outer fabric 14 and the front central fabric 11 becoming misaligned.

[0096] In correspondence between the configuration of this invention and the above-mentioned embodiment, The side portions of the seat back of this invention correspond to the outer side supports 3b of the embodiment, Similarly, The fracture initiation point corresponds to the vicinity of the top T of the outer side support 3b, The pair of first fabric members corresponds to the front outer fabric 14 and the outer side fabric 15, The edges of the first fabric member correspond to the inner seam allowance 14a and the outer seam allowance 14b of the front outer fabric 14, The seam allowance corresponds to the inner seam allowance 14a of the front outer fabric 14, The second fabric member corresponds to the front center fabric 11, The divided fabrics correspond to an upper divided fabric 111 and a lower divided fabric 112, The boundary stitching portion corresponds to the divided stitching portion 113, The sewn portion corresponds to the fabric-side protrusion 141, The webbing corresponds to the inner webbing 18 and the outer webbing 17. The webbing main body portion corresponds to the inner webbing main body 181, The webbing protrusion corresponds to the webbing protrusion 182; The mark corresponds to the triangular notch 142, The present invention is not limited to the configurations of the above-described embodiments, and many other embodiments can be obtained.

[0097] For example, in the above-described embodiment, the front center fabric 11 is composed of an upper divided fabric 111 and a lower divided fabric 112, but this is not limited to this and may be composed of, for example, three or more fabric members divided in the vehicle width direction, or four fabric members arranged so that the stitching lines form a cross.

[0098] Furthermore, when the front central fabric 11 is made up of three or more pieces of fabric divided in the vertical direction of the vehicle, at least one of the stitching portions between the fabrics that make up the front central fabric 11 should be located between a pair of fabric side protrusions 141.

[0099] Furthermore, the back fabric 16 is configured from a single piece of fabric material, but is not limited to this, and may be configured from a plurality of fabric materials divided in a direction intersecting the rear seam allowance 15a. In this case, the outer webbing 17 may be sewn to the rear seam allowance 15a of the outer side surface fabric 15 at positions spaced apart by a predetermined distance across the sewing line along which the multiple fabric members are sewn together.

[0100] Furthermore, the outer webbing 17 is formed in a band shape narrower than the projection interval W2 between the pair of webbing projections 182, but the band width and shape are not limited to this.

[0101] Furthermore, the front outer fabric 14 has fabric-side protrusions 141 to which the webbing protrusions 182 of the inner webbing 18 are sewn, but this is not limitative and the fabric-side protrusions 141 may not be provided. In this case, the seat cover 10 may be configured such that the webbing protrusions 182 of the inner webbing 18 are sewn to the inner seam allowance 14a of the front outer fabric 14.

[0102] Furthermore, although the seat cover 10 is designed to be attached to the vehicle seat 1, which is the driver's seat in a right-hand drive vehicle, this is not limited to this. For example, the seat cover 20 may be designed to be attached to the vehicle seat 6, which is the passenger seat in a right-hand drive vehicle, as shown in Figure 10, which shows an external perspective view of the seat cover 10 in another embodiment.

[0103] Furthermore, in the vehicle seat 1, the side airbag 5a is configured to inflate and deploy from an opening formed by breaking the sewing thread that sews the front outer upholstery material 34 and the outer side surface upholstery material 35 together, but this is not limited to this, and the side airbag 5a may be configured to inflate and deploy by breaking an appropriate location of the outer side support 3b. Furthermore, the seat cover 10 is attached to the seat back 3 of the vehicle seat 1, but is not limited to this and may be attached integrally to the seat cushion 2 and seat back 3 of the vehicle seat 1. Alternatively, the seat cover may be attached integrally to the seat cushion 2, seat back 3, and headrest 4 of the vehicle seat 1.

[0104] In addition, the deployment direction X of the side airbag 5a is set to be forward of and slightly above the vehicle in a side view, but is not limited thereto, and the deployment direction X of the side airbag 5a may be set to be forward of the vehicle in a side view. Alternatively, the deployment direction X of the side airbag 5a may be set to be upward of and slightly forward of the vehicle in a side view.

[0105] Furthermore, although the seat cover 10 is configured to have the outer webbing 17, it may be configured not to have the outer webbing 17.

[0106] Furthermore, although the outer side surface fabric 15 is configured from a single fabric member, it is not limited to this and may be configured to include multiple fabric members divided in the vehicle vertical direction along the vehicle width direction. In this case, the front seam 15b of the outer side surface fabric 15 includes a pair of outer sewn portions to which the inner force cloth 18 is sewn, at positions spaced a predetermined distance apart and sandwiching the sewn portions of the multiple fabric members.

[0107] In addition, when the outer side surface fabric 15 is divided in the vehicle vertical direction, the outer sewn portion of the outer side surface fabric 15 may be formed to protrude from the edge of the front seam allowance 15b.

[0108] Furthermore, when the outer side surface fabric 15 is divided in the vertical direction of the vehicle, the inner force cloth 18 may be provided with a protruding portion that protrudes outward in the vehicle width direction from the inner force cloth main body 181 at a position corresponding to the outer sewn portion of the outer side surface fabric 15. Note that the protruding portion of the inner force cloth 18 is to be sewn to the outer sewn portion of the outer side surface fabric 15. [Explanation of symbols]

[0109] 1...Vehicle seat 3...Seat back 3b...Outer side support 5a...Side airbag 6...Vehicle seat 10...Seat cover 11...Front center fabric 14…Front outer fabric 14a...Back seam allowance 14b...Front seam allowance 15…Outer side fabric 15a...Back seam allowance 15b...Front seam allowance 17…Inner force cloth 18...Outer force cloth 20...Seat cover 111...Upper divided fabric 112...Lower division fabric 141…The lateral protrusion of raw land 181…Inner Force Cloth Body 182…Libu protrusion T…top X…Expansion direction

Claims

1. A seat cover that is removably attached to a vehicle seat having a side airbag that is built into a side portion of a seat back and that inflates and deploys by breaking a breaking initiation point provided on the side portion of the seat back, a pair of first fabric members that cover the side portions of the seat back and have edges sewn together so as to substantially coincide with the tear initiation points; a webbing that is sewn to an edge of the first fabric member that faces the edge in the deployment direction of the side airbag in a side view and has lower stretchability than the first fabric member; a second fabric member sewn to a seam allowance portion which is one edge of the first fabric member provided with the webbing, The second fabric member is composed of a divided fabric that is divided in a direction intersecting the seam allowance portion, The portion where the edges of the divided fabrics that intersect with the seam allowance are sewn together is defined as a boundary sewn portion, The seam allowance portion of the first fabric member has a pair of sewn portions to which the webbing is sewn, at positions spaced a predetermined distance apart with the boundary sewn portion therebetween. Seat covers.

2. The part to be sutured is a protruding portion formed from the edge of the seam allowance portion of the first fabric member; The seat cover according to claim 1.

3. The webbing is a substantially rectangular webbing main body portion disposed across the edge ends of the first fabric member facing each other in the deployment direction; and webbing protrusions protruding from the webbing main body at positions corresponding to the pair of sewn portions, The webbing protrusion is sewn to the sewn portion. The seat cover according to claim 1.

4. The webbing protrusion is provided at both corners of the webbing body in a direction along the edge of the seam allowance portion The seat cover according to claim 3.

5. The seam allowance portion of the first fabric member is A mark for determining the position of the second fabric member is provided between the pair of sewn portions. The seat cover according to claim 1.

Images