JP6947019B2 - Seat covers for vehicle seats and their manufacturing methods - Google Patents

Description

The present invention relates to a seat cover for a vehicle seat including a first surface material capable of forming a design surface and a second surface material sewn to the first surface material, and a method for manufacturing the same.

This type of vehicle seat has a seat pad that elastically supports the occupant in the outer shape of the seat and a seat cover that covers the seat pad. The seat cover is a face material that constitutes the design surface of the seat, and is formed by sewing a plurality of skin pieces, and a stitched portion is formed at a joint portion of adjacent skin pieces. This sutured portion is a portion where the seam allowances of the epidermis pieces are overlapped in a middle surface shape and sutured with a suture line, and is arranged on the back side of the seat cover so as to be along the seam portion of the epidermis piece. Then, while covering the seat pad with the seat cover, the sutured portion on the back side of the seat cover is arranged on the peripheral edge of the seat pad, for example. By doing so, the joint portion (suture line) between the skin pieces is arranged along the peripheral edge of the seat pad to form a part of the design of the seat. In this type of configuration, if the inclination direction of each seam allowance forming the suture portion is not uniform, the suture line meanders and the appearance deteriorates. Therefore, each seam allowance forming the sewn portion is tilted in the same direction and arranged on the seat pad.

Here, in the above-described configuration, from the viewpoint of improving the design of the sheet, the seams (suture lines) between the skin pieces may be arranged substantially linearly or curved. For example, depending on the shape of the sheet, the suture lines may be arranged linearly in the left-right direction, or may be arranged so as to be gradually curved to the right or left side toward the front. The suture portion extends linearly or curvedly together with the suture line. At this time, there may be a difference in circumference between the inside (suture line side) and the outside (end side) of the suture part, and the suture portion is particularly curved. There is a tendency for a large difference in circumference to occur in the portion. In this type of configuration, the situation where the suture line meanders due to the suture portion becoming excessively uneven due to the difference in the inner and outer circumferences should be avoided as much as possible. In particular, when the skin piece has a surface material constituting the design surface and an elastic material elastically stretchable in a state of being overlapped with each other, the thick sewn portion tends to be excessively uneven. Will be. Therefore, in the seat cover disclosed in Patent Document 1, the outer edge side of the seam allowance of each skin piece is cut out to form a wavy shape (see FIG. 11 of Patent Document 1). When the sewn portion is arranged linearly or curvedly, the gap between the adjacent notch portions is widened or contracted to prevent excessive unevenness of the sewn portion as much as possible.

Japanese Unexamined Patent Publication No. 2000-15550

By the way, in the known technique, the outer edge side of the sutured portion is notched in a wavy shape, but the seam allowance portion (surface material, elastic material) of the skin piece to be sutured does not exist in this notched portion. Therefore, when the edge of the surface material (first surface material of the present invention) is temporarily sewn to the edge of the elastic material (second surface material of the present invention) to form the skin piece, the notch portion is used for temporary sewing. The suture line may drop and fall off, resulting in poor finish. For this reason, in the configuration of the known technique, it is necessary to take care not to drop the suture line for tacking, and the workability at the time of manufacturing the seat cover tends to deteriorate. When the seam allowances of both skin pieces are sewn to form a sutured portion, there is a concern that the suture line for lockstitching may fall into the notch portion. The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to make the first and second face materials constituting the sutured portion of the seat cover meandering of the suture line. The idea is to sew with better finish while avoiding as much as possible.

As a means for solving the above problems, the seat cover of the vehicle seat of the first invention includes a plurality of skin pieces and a suture portion in which the seam allowances of adjacent skin pieces are sutured with suture lines. .. At least a part of the plurality of skin pieces is composed of a first face material and a second face material capable of forming a design surface, and the edges of the first face material and the second face material are connected to each other. It constitutes at least a part of the sutured portion in a aligned and sutured state. In this type of configuration, it is desirable that the first face material and the second face material constituting the sewn portion of the seat cover are sewn with better finish while avoiding meandering of the suture line as much as possible.

Therefore, in the present invention, the first edge portion of the first face material has a first alignment portion and a first notch portion in which the outer edge of the first edge portion is cut out deeper than the first alignment portion. In addition to being provided, the second edge portion of the second face material includes a second alignment portion and a second notch portion in which the outer edge of the second edge portion is cut out deeper than the second alignment portion. Is provided. The first edge portion and the second edge portion are sewn in a state where the first alignment portion and the second alignment portion are aligned, and the first notch portion is the first in the extending direction of the suture portion. It is placed in a place different from the two notch parts. In the present invention, corresponding notch portions are provided at the respective edges of the first face material and the second face material constituting the sutured portion. By reducing the influence of the difference in the peripheral length of the sutured portion depending on each notch portion, it is possible to avoid excessive unevenness of the sutured portion as much as possible. In addition, in the state where the first face material and the second face material are sewn together, the first notch part and the second notch part are arranged at different places, and the suture line for suturing the edges of the double-sided lumber is removed. By avoiding it as much as possible, the structure contributes to improving the finish of the seat cover.

The seat cover of the vehicle seat of the second invention is the seat cover of the vehicle seat of the first invention, and the stitched portion is formed by sewing the seam allowances of the first skin piece and the second skin piece to each other. The first skin piece is formed by stitching a first face material made of leather or cloth and an elastically stretchable second face material in a state of being overlapped with each other. Further, in the portion to be the sutured portion of the first epidermis piece, the first edge portion is arranged so as to project from the second edge portion to the outer edge side of the sutured portion. In the present invention, the first edge portion of the first surface material capable of forming the design surface is projected and arranged at the portion to be the suture portion of the first skin piece. Therefore, when the first epidermis piece and the second epidermis piece are sutured, the first surface material of the first epidermis piece and the corresponding portions of the second epidermis piece can be sutured while being aligned.

The seat cover of the vehicle seat of the third invention is formed by sewing the seam allowances of the first skin piece and the second skin piece to each other in the seat cover of the vehicle seat of the first invention or the second invention. The first skin piece is formed by stitching a first face material made of leather or cloth and an elastically stretchable second face material in a state of being overlapped with each other. The first epidermis piece has a planar maintenance portion that maintains the sutured portion in a tilted state, and the maintenance portion is a portion that becomes the suture portion of the second epidermis piece and the first epidermis piece. It is attached by adhering it while straddling the back side. In the present invention, the maintenance portion is adhered to the portion to be the suture portion of the second epidermis piece instead of the side of the first epidermis piece having each notch portion, so that the maintenance portion can be stably attached by the seat cover. Can be left.

The seat cover of the vehicle seat of the fourth invention is the seat cover of the vehicle seat of the third invention, and the second face material is provided with a positioning portion serving as a positioning portion with the maintenance portion. In the present invention, the maintenance portion can be attached to an appropriate position of the first skin piece and the second skin piece with reference to the positioning portion of the second face material forming the back side of the first skin piece.

The method for manufacturing a seat cover for a vehicle seat of the fifth invention is a manufacturing method for manufacturing a seat cover for a vehicle seat according to any one of the second to fourth inventions, and the peripheral edge of the first face material is the first. It is divided into an edge portion and another edge portion in which the first notched portion is not formed. Therefore, with the first face material protruding from the second face material to the outer edge side of the sutured portion, the other edge portion is sewn to the second face material, and then the first edge portion is sewn to the second edge portion. It was decided to. In the present invention, by suturing the other edge portion and the first edge portion in order, the first face material can be more reliably projected and arranged at the portion to be the suture portion of the first epidermis piece. ..

According to the first invention according to the present invention, the first face material and the second face material constituting the sewn portion of the seat cover can be sewn with better finish while avoiding meandering of the sewn line as much as possible. can. Further, according to the second invention, the first face material and the second face material can be sewn together with better finish. Further, according to the third invention, the first face material and the second face material can be sewn with better finish while more reliably avoiding the meandering of the suture line. Further, according to the fourth invention, the first face material and the second face material can be sewn with better finish while more reliably avoiding the meandering of the suture line. According to the fifth invention, the first face material and the second face material can be sewn with better finish while avoiding meandering of the suture line as much as possible.

It is a perspective view of a vehicle seat. It is a perspective view of a seat cover. FIG. 3 is a cross-sectional view of a seat back corresponding to the cross section taken along line III-III of FIG. It is a schematic perspective view of a seat pad. It is a front view of the first skin piece. It is a development view of each surface material which constitutes a seat cover. It is a front view which shows a part of the surface material as a first face material. It is a development view of each elastic material which constitutes a seat cover. It is a front view which shows a part of the elastic material as a 2nd face material. It is an enlarged front view of a part of the first skin piece. It is a front view of the first skin piece and the second skin piece. It is a front view of the first epidermis piece and the second epidermis piece at the time of suturing. It is a perspective schematic perspective view of the seat cover which shows each stitched part. It is a front view of the 1st skin piece and the 2nd skin piece of Example 2. FIG. It is a front view of the first skin piece and the second skin piece at the time of suturing of Example 2. FIG.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. 1 to 15. In each figure, for convenience, arrow lines indicating the front-rear direction, the left-right direction, and the up-down direction of the vehicle seat are appropriately illustrated. Further, in FIG. 2, for convenience, the seat cover portion where the specific suture line is arranged is shown by a thick line. Further, in the seat covers shown in FIGS. 2 and 13, for convenience, the bead edge and the maintenance portion are omitted, but in reality, as shown in FIG. 3, the bead edge (WM) and the maintenance portion (50) are omitted. Is installed. In FIG. 13, each notch portion of each suture portion (22, 23) is shown in a simplified manner, and a reference numeral corresponding to only a part of each notch portion is attached.

[Example 1]
The vehicle seat 2 of FIG. 1 has a seat cushion 4 and a seat back 6. These seat constituent members (4, 6) are a seat frame (4F, 6F) forming a seat skeleton, a seat pad (4P, 6P) forming a seat outer shape, and a seat cover (4S, 6S) covering the seat pad, respectively. ). A lower portion of the seat back 6 (described in detail later) is foldably connected to the rear portion of the seat cushion 4. A headrest (not shown) can be arranged on the upper part of the seat back 6.

[Seat back]
The seat back 6 in FIG. 1 is a member that serves as a backrest for an occupant, and is formed by covering the seat pad 6P on the seat frame 6F with the seat cover 6S (details of each member will be described later). The seat cover 6S constituting the design surface of the seat is formed by suturing a plurality of skin pieces SP1 to SP6 and the like shown in FIG. 2, and a plurality of sutured portions 21 to are formed on the back side of the seat cover 6S. 23 mag is formed. Each of these sutured portions 21 to 23 and the like is a sutured portion of adjacent epidermis pieces, and is formed by suturing the seam allowances of both epidermis pieces with suture lines SEW1 to SEW3 and the like. For example, on the upper part of the seat back 6, a central suture portion 21 extending linearly, a right suture portion 22 curved on the right side of the seat, and a left suture portion 23 curved on the left side of the seat are substantially connected. It is arranged so as to form a substantially C shape when viewed upward. The right side suture portion 22 is a portion where the seam allowances of the first epidermis piece (SP2) and the second epidermis piece (SP4), which will be described later, are sutured with the right suture line SEW2. Similarly, the left side suture portion 23 is also a portion where the seam allowances of another first skin piece (SP3) and another second skin piece (SP5), which will be described later, are sutured with the left side suture line SEW3.

Then, in this embodiment, for example, in the right side suture portion 22 shown in FIGS. 2 and 3, the first skin piece (SP2) is composed of the first face material (30a) and the second face material (40a) described later. Due to the relationship, it is a little thick. In this type of configuration, when the right side suture portion 22 is curved as shown in FIG. 2, there is a difference in circumference between the inside (left side of each figure) and the outside (right side of each figure) of the right side suture part 22. Therefore, there is a concern that the right suture line SEW2 will meander. For this reason, the right side suture portion 22 is partially cut out to avoid the meandering of the right side suture line SEW2 as much as possible. Dropout should be prevented as much as possible. Therefore, in this embodiment, the first surface material (30a) and the second surface material (40a) constituting the suture portion (22) of the seat cover 6S are avoided as much as possible from the meandering of the corresponding suture line SEW2 by the configuration described later. However, we decided to sew it with better finish. Hereinafter, each configuration will be described in detail.

[Seat pad]
Here, the seat pad 6P is a member that is substantially rectangular in front view with reference to FIG. 4, and has a seating portion 6a, a pair of left and right bank portions 6b, an upper surface portion 6c, and a rear surface portion 6d. There is. The seat pad 6P is arranged on the seat frame 6F of FIG. 1, which has a substantially arch shape, and the seat frame 6F is made of a metal having excellent rigidity. The material of the seat pad 6P is not particularly limited, and a foamed resin such as ^{polyurethane foam (density: 10 kg / m 3 to} 60 kg / m ^{3) can be exemplified.} The seating portion 6a is a portion extending vertically in the center in the seat width direction, and each bank portion 6b is a portion protruding forward on both the left and right sides of the seating portion 6a. These left and right bank portions 6b can be divided into a top plate side portion 6ba inside the seat and a gusset portion 6bb forming a side surface, respectively. The upper surface portion 6c is a portion forming the upper surface of the seat pad 6P, and the rear surface portion 6d is a portion forming the rear surface of the seat pad 6P. A stepped portion 7 that is one step lower is provided on the trailing edge of the upper surface portion 6c. Further, the right side and the left side of the step portion 7 cross the left and right bank portions 6b back and forth, respectively, and gradually curve downward toward the front side and extend to the seating portion 6a side.

[Seat Cover]
The seat cover 6S is a face material constituting the design surface of the seat back 6 with reference to FIGS. 1 and 2, and is formed by suturing a plurality of skin pieces SP1 to SP6 and SP (each drawing). Then, for convenience, specific reference numerals SP1 to SP6 are attached to specific skin pieces, and common reference numerals SP are attached to other skin pieces). For example, the upper part of the seat cover 6S is formed of an anterior epidermis piece SP1, an upper right epidermis piece SP2, an upper left epidermis piece SP3, a right kamachi side epidermis piece SP4, a left kamachi side epidermis piece SP5, and a posterior epidermis piece SP6. (Details of the surface material and elastic material that are the materials of each skin piece will be described later). The front skin piece SP1 is a skin piece that covers the portion of the seat pad 6P from the upper portion to the upper surface portion 6c of the seat pad 6P with reference to FIGS. I'm doing it. The rear skin piece SP6 is a skin piece that covers the upper part of the rear surface portion 6d, and has a long rectangular shape on the left and right.

[Upper right epidermis piece / upper left epidermis piece (first epidermis piece)]
Further, the upper right skin piece SP2 is a skin piece that covers the upper part of the top plate side portion 6ba on the right side with reference to FIGS. 2 and 4, and is arranged on the right side of the front skin piece SP1. The upper left skin piece SP3 is a skin piece that covers the upper part of the top plate side portion 6ba on the left side, and is arranged on the left side of the front skin piece SP1. The upper right skin piece SP2 and the upper left skin piece SP3 correspond to the first skin piece of the present invention, respectively. The upper right skin piece SP2 and the upper left skin piece SP3 have substantially the same basic configuration except that they have a substantially symmetrical shape. Therefore, the details will be described below, using the upper right skin piece SP2 as an example.

The upper right skin piece SP2 shown in FIG. 5 is a triangular skin piece that is substantially vertically long in the vertical direction, and has a relatively wide center in the vertical direction. The upper right skin piece SP2 has a plurality of seam allowances (1st seam allowance 11, 2nd seam allowance 12, 3rd seam allowance 13) and a configuration described later (right surface material 30a, right elastic material 40a, and a plurality of suture lines sew1 for temporary sewing. It has ~ seam3). The first seam allowance 11 is a seam allowance extending to the left and right at the lower end of the upper right skin piece SP2, and the second seam allowance 12 is a seam allowance extending substantially linearly up and down at the left end of the upper right skin piece SP2. The third seam allowance 13 is a seam allowance that is curved vertically and extends at the right end of the upper right skin piece SP2, and can be divided into a third upper seam allowance portion 13a and a third lower seam allowance portion 13b. The third upper seam allowance portion 13a is a portion curved from the upper end of the second seam allowance 12 to the right and downward. The third lower seam allowance portion 13b is a portion that is gently curved to the left and downward from below the third upper seam allowance portion 13a (the first alignment portion N1 at the center in the vertical direction, which will be described later).

Further, the upper left skin piece SP3 shown in FIGS. 2 and 13 is also a triangular skin piece that is substantially elongated in the vertical direction. Also in the upper left skin piece SP3, with reference to FIG. 13, a fourth seam allowance 14 on the lower edge, a fifth seam allowance 15 on the right edge, and a sixth seam allowance 16 on the left edge (sixth upper seam allowance 16a, sixth lower seam allowance 16a, sixth lower seam allowance). A seam allowance 16b) is provided. Here, in the upper left skin piece SP3, the fifth seam allowance 15 on the right edge is linear, and the sixth seam allowance 16 is curved so as to be substantially symmetrical with the third seam allowance 13 of the upper right skin piece SP2. ing.

[Right Kamachi side epidermis piece / Left Kamachi side epidermis piece (second epidermis piece)]
The right Kamachi side skin piece SP4 shown in FIGS. 2 and 13 is a skin piece that covers the upper outer side of the right bank portion 6b, and the left Kamachi side skin piece SP5 covers the upper outer side of the left bank portion 6b. It is an epidermis piece. The right Kamachi side epidermis piece SP4 and the left Kamachi side epidermis piece SP5 correspond to the second epidermis piece of the present invention, respectively. The right side epidermis piece SP4 is formed by suturing the right side epidermis piece SPa and the right side epidermis piece SPb so as to be substantially rectangular with reference to FIG. The right kamachi epidermis piece Spa can cover the upper part of the right kamachi portion 6bb with reference to FIGS. 2 and 4. Further, the right side epidermis piece SPb is arranged below the right kamachi epidermis piece SPa and can cover the outside of the right top plate side portion 6ba (the portion excluding the arrangement portion of the upper right epidermis piece SP2). A seam allowance is also provided on the peripheral edge of the right side skin piece SP4. For example, referring to FIGS. 13 and 14, the seventh seam allowance 17 at the left end of the right side skin piece SPa and the left end seam allowance 17 of the right side skin piece SPb are provided. It has an eight seam allowance of 18.

The left side epidermis piece SP5 is also formed by suturing the left side epidermis piece SPc and the left side epidermis piece SPd with reference to FIG. The left side epidermis piece SPc can cover the upper part of the left side kamachi portion 6bb with reference to FIGS. 2 and 4, and the left side epidermis piece SPd is outside the left side top plate side portion 6ba (upper left epidermis piece SP3). The part excluding the place where is placed) can be covered. A seam allowance is also provided on the periphery of the left side skin piece SP5. For example, referring to FIG. 13, the ninth seam allowance 19 at the right end of the left kamachi skin piece SPc and the tenth seam allowance 20 at the right end of the left side skin piece SPd. And have.

[Suture part]
Then, in the seat cover 6S, with reference to FIGS. 2 and 13, adjacent skin pieces are sewn together at suture portions 21 to 23 and the like (in each figure, only a specific suture portion is shown for convenience). .. For example, the upper portion of the seat cover 6S is formed so that the central suture portion 21 and the right suture portion 22 and the left suture portion 23 corresponding to the suture portions of the present invention are joined together. Here, the central suture portion 21 is a suture portion between the anterior epidermis piece SP1 and the posterior epidermis piece SP6, and extends substantially linearly in the left-right direction, which is the seat width direction. In the central suture portion 21, the seam allowance at the rear end of the front skin piece SP1 (reference notation omitted) and the seam allowance at the upper end of the rear epidermis piece SP6 (reference omission) are sewn in a middle surface shape by the central suture line SEW1 extending to the left and right. Has been done. The central suture portion 21 is arranged at a step portion 7 on the upper trailing edge of the seat pad 6P shown in FIG. 4 in a state of being tilted forward.

Further, the right side suture portion 22 is a suture portion between the upper right epidermis piece SP2 and the right Kamachi side epidermis piece SP4 with reference to FIGS. 2 and 13. The right side suture portion 22 extends forward and downward from the right end of the central suture portion 21 while being curved in a convex arc shape to the right. The right side suture portion 22 is a right side suture in which the third seam allowance 13 (13a, 13b) of the upper right skin piece SP2 and the corresponding seam allowance (17, 18) of the right Kamachi side skin piece SP4 are curved in an arc shape. It is formed by being sewn in the middle surface along the line SEW2. For example, the upper portion of the right side seam allowance 22 is composed of a third upper seam allowance portion 13a and a seventh seam allowance 17, with reference to FIG. 13, and has a large curvature with a relatively tight bending condition. Further, the lower portion of the right side seam allowance 22 is composed of a third lower seam allowance portion 13b and an eighth seam allowance 18, and has a relatively loose bending condition and a small curvature. As shown in FIG. 3, the right side suture portion 22 is maintained in a state of being tilted to the left by the maintenance portion 50 described later, and is arranged on the step portion 7 on the upper right side of the seat pad 6P. ..

Further, the left side suture portion 23 is a suture portion between the upper left epidermis piece SP3 and the left kamachi side epidermis piece SP5 with reference to FIGS. 2 and 13. The left side suture portion 23 extends forward and downward from the left end of the central suture portion 21 while being curved in a convex arc shape to the left, and has a substantially symmetrical shape with the right side suture portion 22. Then, with reference to FIG. 13, the left seam allowance 23 has the sixth seam allowance 16 (16a, 16b) of the upper left skin piece SP3 and the corresponding seam allowance (19, 20) of the left kamachi side skin piece SP5. It is formed by being sewn in the middle surface with SEW3. The left side suture portion 23 is also maintained in a state of being tilted to the right by a maintenance portion (not shown), and is also arranged on a step portion 7 on the upper left side of the seat pad 6P shown in FIG.

[Surface material (first face material) / elastic material (second face material)]
Each of the skin pieces SP1 to SP6 and the like has surface materials 30, 30a and 30b constituting the design surface with reference to FIG. 6 (in FIG. 6, specific reference numerals 30a and 30b are attached to the specific surface material). Is attached, and a common reference numeral 30 is attached to other surface materials). These surface materials 30, 30a and 30b can be formed of various face materials that can form the design surface of the sheet, and can be formed of, for example, leather (natural leather, synthetic leather) or cloth (woven fabric, knitted fabric, non-woven fabric). Further, elastically stretchable elastic materials 40, 40a, 40b, 40x shown in FIGS. 3 and 8 can be appropriately attached to the back side of each of the surface materials 30, 30a, 30b. The elastic materials 40, 40a, 40b, 40x can be formed of a mat material made of foamed resin such as urethane lami, or a face material formed by three-dimensionally entwining or laminating fibers. In this embodiment, referring to FIGS. 6 and 8, the front skin piece SP1 is composed of the front surface material 30 and the front elastic material 40. The upper right skin piece SP2 is composed of the right surface material 30a and the left elastic material 40b, and the upper left skin piece SP3 is composed of the left surface material 30b and the left elastic material 40b. The surface materials 30a and 30b of the upper skin pieces SP2 and SP3 correspond to the first face material of the present invention, and the elastic materials 40a and 40b of the upper skin pieces SP2 and SP3 correspond to the second face material of the present invention. Equivalent to. The other skin pieces SP4 to SP6 and SP shown in FIG. 2 can be composed of the surface material alone, or can be composed of the surface material 30 and the elastic material 40x as shown in FIG.

Further, positioning portions N and N1 are provided at appropriate positions on the outer edges of the surface materials 30, 30a and 30b shown in FIG. 6 for positioning the corresponding skin pieces (specifically in FIG. 6). A specific reference numeral N1 is attached to a part of the alignment portion of the epidermis piece, and a common reference numeral N is attached to a part of the other alignment portion). Further, the elastic materials 40, 40a, and 40b shown in FIG. 8 are also provided with the alignment portions N and N2, respectively (in FIG. 8, a specific reference numeral N2 is attached to a part of the alignment portion of the specific skin piece. , A common code N is attached to some of the other alignment parts). Here, the alignment portions N and the like of the surface materials 30, 30a and 30b and the elastic materials 40, 40a and 40b have substantially the same basic configuration and are provided at appropriate positions of the corresponding skin pieces. .. Therefore, details including each alignment portion will be described below, using the right side surface material 30a and the right side elastic material 40a of the upper right skin piece SP2 as an example.

[First edge of first face material and other edges]
The right side surface material 30a as the first face material is a face material having a shape that resembles the upper right skin piece SP2 with reference to FIGS. 6 and 7, and has a plurality of edges (31 to 33) and a plurality of positions. It has an alignment site N, a plurality of first alignment sites N1, and a plurality of first completely missing sites 35a to 35h. Here, each edge of the right surface material 30a is a portion to be sewn to the right elastic material 40a, which will be described later, and is divided into a lower edge 31, a left edge 32, and a right edge 33. There is. Further, the lower edge portion 31 becomes a part of the first seam allowance 11 of the upper right skin piece SP2, and the left edge portion 32 becomes a part of the second seam allowance 12 of the upper right skin piece SP2 with reference to FIG. The right edge portion 33 becomes a part of the third seam allowance 13 of the upper right skin piece SP2, and can be divided into an upper right edge portion 33a and a lower right edge portion 33b. The upper right edge portion 33a becomes a part of the third upper seam allowance portion 13a, and the right lower edge portion 33b becomes a part of the third lower seam allowance portion 13b. In the present embodiment, the right edge portion 33 of the right surface material 30a corresponds to the first edge portion of the present invention, the plurality of first alignment portions N1 described later, and the plurality of first completely missing portions 35a to 35h. And have. Further, the lower edge portion 31 and the left edge portion 32 correspond to the other edge portions of the present invention, and each of these edge portions 31 and 32 is provided with an alignment portion N.

[First alignment site]
Then, referring to FIGS. 6 and 7, a plurality of first alignment portions N1 are provided on the right edge portion 33 of the right surface material 30a, and a plurality of or singular positions are provided on the other edge portions 31 and 32. A mating site N is provided. Each of these positioning portions N1 and N can be formed by shallowly notching the corresponding edge portion in a triangular shape, or can also be formed by providing a triangular protrusion on the corresponding edge portion. For example, in the upper right edge portion 33a shown in FIG. 7, a pair of first alignment portions N1 are formed at appropriate intervals in the extending direction (generally the vertical direction) of the upper right edge portion 33a. The upper first alignment portion N1 and the lower first alignment portion N1 are each formed by shallowly cutting out the outer edge of the upper right edge portion 33a in a triangular shape.

[No. 1 missing part]
Further, the upper right edge portion 33a of the right surface material 30a is provided with a plurality of first completely missing portions 35a to 35h with reference to FIG. 7. These plurality of first completely notched parts 35a to 35h are parts in which the outer edge of the upper right edge part 33a is cut out in a substantially rectangular shape (generally the same shape and the same size), and the upper right edge part is more than the first alignment part N1. It is formed by deeply cutting out 33a. The first completely missing portions 35a to 35h are arranged at locations different from the first alignment portion N1 and are arranged at the upper right edge portion 33a at appropriate intervals from top to bottom in alphabetical order. That is, a pair of first completely missing parts 35a and 35b are arranged above the upper first alignment part N1, and a pair of first completely notched parts 35c and 35d are also arranged between the pair of upper and lower alignment parts N. Has been done. Further, four first completely missing parts 35e to 35h are provided below the lower first alignment part N1. The depth dimension D1 and the width dimension W1 of each first notched portion 35a and the like are not particularly limited as long as the difference in the peripheral length of the right side suture portion 22 can be absorbed, but the larger the depth dimension D1, the circumference of the right side suture portion 22. The length difference can be absorbed efficiently. For example, in each of the first notched portions 35a and the like in this embodiment, the width dimension W1 is set to be larger than the first alignment portion N1, and the depth dimension D1 is 1.5 times or more the first alignment portion N1. It is possible to efficiently absorb the difference in circumference by setting it to (preferably approximately twice).

[Second edge of second face material]
The right elastic material 40a as the second face material is a face material having a shape that resembles the upper right skin piece SP2 with reference to FIGS. 8 and 9, and has a plurality of edge portions 41 to 43 and a plurality of alignment portions. It has N, a plurality of second alignment portions N2, a plurality of second notch portions 45a to 45d, and a positioning portion H described later. Here, each edge portion of the right elastic material 40a is a portion to be sutured with the right surface material 30a, and is formed on the lower elastic side edge portion 41, the left elastic side edge portion 42, and the right elastic side edge portion 43. It is divided. Further, the lower elastic side edge portion 41 becomes a part of the second seam allowance 12 of the upper right skin piece SP2 with reference to FIG. 5, and the left elastic side edge portion 42 becomes a part of the second seam allowance 12 of the upper right skin piece SP2. It becomes. The right elastic side edge portion 43 becomes a part of the third seam allowance 13 of the upper right skin piece SP2, and can be divided into an upper right elastic side edge portion 43a and a lower right elastic side edge portion 43b. The upper right elastic side edge portion 43a becomes a part of the third upper seam allowance portion 13a, and the lower right elastic side edge portion 43b becomes a part of the third lower seam allowance portion 13b. Then, in the present embodiment, the right elastic side edge portion 43 of the right elastic member 40a corresponds to the second edge portion of the second face material of the present invention, and a plurality of second alignment portions N2, which will be described later, and a plurality of second alignment portions N2. It has a second notch portion 45a to 45d.

[Second alignment site]
Then, referring to FIGS. 8 and 9, the right elastic side edge 43 of the right elastic member 40a is provided with the second alignment portion N2, and the other elastic side edges 41 and 42 are plural or singular. The alignment portion N of the above is provided. Each of these positioning portions N2 and N can be formed by notching the corresponding edge portion in a shallow triangular shape, or by providing a triangular protrusion on the corresponding edge portion. Then, at least a part of the plurality of second alignment portions N2 and N is with the corresponding first alignment portion N1 of the right surface material 30a in a state where the right surface material 30a and the right elastic material 40a shown in FIG. 5 are overlapped. It is placed in a position that roughly matches.

[Second notch site]
Further, the upper right elastic side edge portion 43a of the right elastic member 40a is provided with a plurality of second notch portions 45a to 45d with reference to FIG. 9. The plurality of second notch portions 45a to 45d are arranged above (different locations) from the second alignment portion N2, and are arranged in alphabetical order from top to bottom at appropriate intervals on the upper right elastic side edge portion 43a. It is arranged. Each of the plurality of second notch portions 45a to 45d is a portion in which the outer edge of the upper right elastic side edge portion 43a is cut out in a substantially rectangular shape, and the upper right elastic side edge portion 43a is deeper than the second alignment portion N2. It is formed by notching. In this embodiment, a pair of second notch portions 45a and 45c (width dimension W2) having a relatively narrow width and a pair of second notch portions 45b and 45d (width dimension W2) having a relatively wide width are used. W3 (W3> W2)) are alternately arranged at the upper right elastic side edge portion 43a. The depth dimension D2 and the width dimensions W2 and W3 of the second notch portions 45a to 45d are not particularly limited as long as they can absorb the difference in the peripheral length of the right side suture portion 22, but the larger the depth dimension D2, the right side suture portion 22 Can efficiently absorb the difference in circumference. Then, in each of the second notch portions 45a to 45d, with reference to FIGS. 5 and 10, in a state where the right surface material 30a and the right elastic material 40a are overlapped with each other, the corresponding first notch portions (in FIG. 10 in FIG. 10). It is arranged between 35c and 35d, 35d and 35e), respectively.

Then, with reference to FIGS. 6 and 8, the left surface material 30b and the left elastic material 40b of the upper left skin piece SP3 are also provided so as to have the same configuration as the corresponding member of the upper right skin piece SP2 so as to be symmetrical. Has been done. That is, corresponding alignment portions N1, N2, and N are also provided at appropriate positions of the left side surface material 30b and the left side elastic material 40b. Further, referring to FIGS. 6, 8 and 13, the left surface material 30b is also provided with the first notch portion 35x, and the left elastic material 40b is also provided with the second notch portion 45x (see FIG. 6, FIG. 8 and FIG. In each figure, for convenience, only some of the notch parts are marked).

[Method of forming the epidermis piece (first epidermis piece)]
Here, since the forming methods of the epidermis pieces SP1 to SP3 shown in FIG. 2 are almost the same, the forming method will be described by taking the upper right epidermis piece SP2 as an example. In forming the upper right skin piece SP2, with reference to FIG. 5, the right surface material 30a and the right elastic material 40a are overlapped, and the edges 31 to 33 of the right surface material 30a correspond to the right elastic material 40a. The edges 41 to 43 to be sewn are sewn with suture lines sew1 to sew3 for tacking. At this time, the right side surface material 30a and the right side elastic material 40a are appropriately aligned with each of the alignment parts N1 and N of the right side surface material 30a and the corresponding alignment parts N2 and N of the right side elastic material 40a as markers. Can be stacked.

Then, in this embodiment, referring to FIGS. 5, 6 and 8, the outer edges of the lower edge portion 31 and the left edge portion 32 of the right surface material 30a are the lower elastic side edge portion 41 and the lower elastic side edge portion 41 of the right elastic material 40a. It is aligned with the outer edge of the left elastic side edge portion 42. Further, referring to FIG. 10, the outer edge of the right edge portion 33 of the right surface material 30a is projected to the right of the right elastic side edge portion 43 of the right elastic material 40a (projection dimension L1), and in this state, the right side table. The edges of the material 30a and the right elastic material 40a are sewn together. At this time, in this embodiment, the suturing work of the right edge portion 33 and the right elastic side edge portion 43 shown in FIG. 10 is postponed, and the other edge portions (31 and 41, 32 and 42) shown in FIG. 5 are sutured to each other. It is preferable to carry out the work. By stitching the other edges together in this way to regulate the relative movement of the right side surface material 30a and the right side elastic material 40a, the outer edge of the right side edge portion 33 of the right side surface material 30a is set to the right elasticity of the right side elastic material 40a. The suture can be sewn in a state in which the side edge portion 43 is more reliably projected to the right than the side edge portion 43. For example, in this embodiment, referring to FIG. 5, the left edge portion 32 and the left elastic side edge portion 42 are sewn with the first suture line sew1 for temporary sewing, and then the lower edge portion 31 and the lower elastic side edge portion 41 are sewn together. Is sutured with the second suture line sew2 for tacking. Subsequently, the right edge portion 33 and the right elastic side edge portion 43 are sewn with the third suture line sew3 for temporary sewing.

By the way, in the above-mentioned suturing operation, the third suture line sew3 for temporary sewing shown in FIG. 5 may drop from the third seam allowance 13 by falling into the cutout portions 35a to 35h and 45a to 45d. Then, the third stitch line sew3 partially falls off from the third seam allowance 13, so that the stitches of the right side edge 33 and the right elastic side edge 43 become loose, and the third seam allowance 13 is twisted or loosened to finish. There is concern that the sex will worsen. Therefore, in this embodiment, in a state where the right side surface material 30a and the right side elastic material 40a are overlapped, the first notch portions 35a to 35h and the second notch portions 45a to 45d are staggered (generally in the vertical direction). (In different positions as seen in). Therefore, the third suture line sew3 can be received by at least one of the right surface material 30a and the right elastic material 40a, and the third suture line sew3 can be prevented from falling off as much as possible. In this way, in this embodiment, the first notch portions 35a to 35h and the second notch portions 45a to 45d are arranged at different locations to prevent the third suture line sew3 from falling off (missing) as much as possible. The suturing work of the cover 6S can be performed efficiently.

[Seat cover forming method (sewn method of first skin piece and second skin piece)]
In the formation of the seat cover 6S shown in FIG. 2, adjacent skin pieces are sutured to each other, and corresponding suture portions (center suture portion 21, right suture portion 22, left suture portion 23) are formed between them. Here, since the suturing method of each epidermis piece is almost the same, the suturing method will be described below by taking the upper right epidermis piece SP2, the right Kamachi side epidermis piece SP4, and the right suture portion 22 as an example. When suturing the upper right epidermis piece SP2 and the right Kamachi side epidermis piece SP4, the bead edge WM shown in FIG. 3 can be sewn together with the right suture line SEW2 and attached.

When forming the right side stitch portion 22, the third seam allowance 13 of the upper right skin piece SP2 and the corresponding seam allowance (seventh seam allowance 17, eighth seam allowance 18) of the right side skin piece SP4 are referred to with reference to FIGS. 11 to 13. ) And are sutured on the right side seam allowance SEW2. At this time, referring to FIG. 11, the right epidermis piece SP4 is formed by suturing the right epidermis piece SPa and the right epidermis piece SPb, and the upper edge of the right epidermis piece SP4 is the posterior epidermis piece SP6. The left edge of the suture is pre-sewn (these sutures have a common reference numeral 20). Therefore, the third upper seam allowance portion 13a of the upper right skin piece SP2 is sewn to the seventh seam allowance 17, and then the third lower seam allowance portion 13b is sewn to the eighth seam allowance 18. At this time, in this embodiment, in the third seam allowance portion 13, the right side surface material 30a is arranged relatively outside as shown in FIG. Therefore, as shown in FIG. 12, when the third upper seam allowance portion 13a and the seventh seam allowance 17 are sewn, the right side surface material 30a of the third seam allowance 13 and the surface material 30 of the seventh seam allowance 17 are sewn while being aligned. Therefore, the structure further contributes to the improvement of the finish of the seat cover 6S. On the contrary, if the right elastic body 40a and the surface material 30 are aligned with each other, the right elastic body 40a expands and contracts, and the right suture line SEW2 does not come to the target position. It causes deterioration of finish.

[Maintenance part / positioning part]
Next, referring to FIGS. 3 and 13, the band-shaped maintenance portion 50 is attached while tilting the right side suture portion 22 to the left side on the upper right epidermis piece SP2 side. The maintenance portion 50 is a face material for maintaining a state in which the right side suture portion 22 is tilted toward the upper right skin piece SP2 side. The maintenance portion 50 is a band-shaped face material extending along the right side suture portion 22, and has an adhesive layer on the surface facing the right side suture portion 22. Therefore, the maintenance portion 50 is adhered and attached while straddling the seventh seam allowance 17 and the back side of the upper right skin piece SP2 while applying the maintenance portion 50 so as to cover the right side suture portion 22 in the collapsed state. By attaching the right edge side of the maintenance portion 50 to the seventh seam allowance 17 side where the notch portion is not provided in this way, the seat cover 6S can be stably attached. Further, in this embodiment, a plurality of hole-shaped positioning portions H are provided on the right elastic member 40a arranged on the back side of the upper right skin piece SP2. Each positioning portion H is arranged at appropriate intervals in the vertical direction in which the right side suture portion 22 shown in FIG. 2 extends, and each positioning portion H is a portion where the right edge of the maintenance portion 50 shown in FIG. 3 is arranged. Shown. Therefore, by aligning the right edge of the maintenance portion 50 with each positioning portion H and mounting the maintenance portion 50, the maintenance portion 50 can be mounted at appropriate positions of the upper right skin piece SP2 and the right gusset side skin piece SP4.

Further, when forming the left side stitch portion 23, with reference to FIG. 13, the sixth seam allowance 16 of the upper left skin piece SP3 and the corresponding seam allowance (9th seam allowance 19, tenth seam allowance 20) of the left kamachi side skin piece SP5 are used. Is sutured in the middle surface with the left seam allowance SEW3. Next, the left side suture portion 23 is tilted to the right on the upper left skin piece SP3 side, and a band-shaped maintenance portion (not shown) is attached. The upper left epidermis piece SP3 and the left suture portion 23 have substantially the same configuration as the upper right epidermis piece SP2 and the right suture portion 22. Therefore, the maintenance portion (not shown) can be stably attached to the upper left skin piece SP3 and the left Kamachi side skin piece SP5 at appropriate positions.

[Seat cover placement work]
With reference to FIG. 1, the seat pad 6P is covered with the seat cover 6S, and the seat cover 6S constitutes the design surface of the seat back 6. Then, with reference to FIGS. 2 and 13, in the upper part of the seat back 6, the central suture portion 21, the right suture portion 22, and the left suture portion 23 are arranged so as to form a substantially C shape when viewed upward. By arranging the corresponding suture lines SEW1 to SEW3 in a substantially C shape when viewed upward, the design of the seat back 6 is improved. In particular, in this embodiment, each of the sutured portions 21 to 23 is in a state of being raised by the bead edge WM shown in FIG. 3, and the sheet configuration is further improved. In this type of configuration, in order to maintain the excellent design of the sheet, for example, in the curved suture portions 22 and 23, there is a difference in peripheral length between the inside and the outside, and the corresponding suture lines SEW2 and SEW3 Should be avoided as much as possible.

Here, the right seam allowance 22 of the present embodiment refers to the third seam allowance 13 (33a, 43a) of the upper right skin piece SP2 and the seam allowance 17 of the right Kamachi side skin piece SP4 with reference to FIGS. 3, 5 and 13. , 18 and. Therefore, in the upper right skin piece SP2 shown in FIG. 5, the first alignment portion N1 and the first completely missing portions 35a to 35h are provided on the upper right edge portion 33a of the right surface material 30a. Further, the upper right elastic side edge portion 43a of the right elastic member 40a is provided with a second alignment portion N2 and a second notch portion 45a to 45d. The right surface material 30a and the right elastic material 40a are sewn in a state where the first alignment portion N1 and the second alignment portion N2 are aligned, and the first completely missing portions 35a to 35h are the upper right edges. It is arranged at a position different from the second notched parts 45a to 45d in the extending direction of the part 33a.

As described above, in this embodiment, the notch portions 35a to 35h (45a to 45d) corresponding to the respective edge portions 33a (34a) of the right side surface material 30a (right side elastic material 40a) which is a part of the right side suture portion 22. ) Is provided. When the right side suture portion 22 is curved, the gap between the adjacent notch portions 35a to 35h (45a to 45d) expands or contracts, and the influence of the difference in the peripheral length of the right side suture portion 22 is exerted. By reducing the amount, it is possible to avoid excessive unevenness on the right side suture portion 22 as much as possible. In this way, in this embodiment, the unevenness of the right side suture portion 22 is avoided as much as possible, so that the joint portion (right side suture line SEW2) of the upper right epidermis piece SP2 and the right Kamachi side epidermis piece SP4 is curved neatly without meandering as much as possible. It is possible to arrange them.

Further, the left side suture portion 23 shown in FIG. 2 has the same configuration as the right side suture portion 22. That is, with reference to FIGS. 6, 8 and 13, corresponding notch portions 35x (45x) are also provided at each edge portion of the left side surface material 30b (left side elastic material 40b) constituting the left side suture portion 23. ing. Therefore, in this embodiment, the joint portion (left side suture line SEW3) of the upper left epidermis piece SP3 and the left Kamachi side epidermis piece SP5 can be arranged in a neatly curved shape without meandering as much as possible.

As described above, in the present embodiment, the first face materials (surface materials 30a, 30b) and the second face materials (elastic materials 40a, 40b) constituting the sutured portions (22, 23) are formed on the respective edges. , Corresponding cutout portions 35a to 35h, 35x (45a to 45d, 45x) are provided. By reducing the influence of the difference in peripheral length of each suture portion (22, 23) depending on each notch portion, it is possible to avoid excessive unevenness on each suture portion (22, 23) as much as possible. .. Further, in a state where the surface materials 30a and (30b) and the elastic materials 40a (40b) are sewn together, the first notched portion 35a to 35h (35x) and the second notched portion 45a to 45d (45x) are different from each other. The seat cover 6S is configured to contribute to the improvement of the finish by arranging the seat cover 6S in the above position and avoiding the suture line sew3 or the like for suturing the edges of the double-sided materials from falling off as much as possible. Therefore, according to the present embodiment, the first face materials (30a, 30b) and the second face materials (40a, 40b) constituting the stitched portions (22, 23) of the seat cover 6S are sewn together. While avoiding the meandering of the lines SEW2 and SEW3 as much as possible, the stitching can be performed with better finish.

Further, in this embodiment, the first edge of each first surface material (30a, 30b) capable of forming a design surface is formed on each suture portion (22, 23) of each first skin piece (SP2, SP3). The portion 33 and the like are projected and arranged. Therefore, when suturing each first skin piece (SP2, SP3) and each second skin piece (SP4, SP5), each first face material (30a, 30b) of each first skin piece (SP2, SP3) And the corresponding parts of the second skin pieces (SP4, SP5) can be sewn while being aligned with each other, which further contributes to the improvement of the finish of the seat cover 6S. Then, in this embodiment, when the first skin pieces (SP2, SP3) are formed, for example, the other edges (31, 32) of the right surface material 30a and the first edge (33) are sewn in order. By doing so, each of the first face materials (30a, 30b) can be more reliably projected and arranged at the portion of each of the first skin pieces (SP2, SP3) that should be the sutured portion (22, 23).

Further, in this embodiment, the maintenance portion 50 is a portion that becomes each suture portion of each second epidermis piece (SP4, SP5) instead of the side of each first epidermis piece (SP2, SP3) having each notch portion. By adhering to (17, 18, etc.), it can be stably attached by the seat cover 6S. Then, in this embodiment, the maintenance portion 50 is attached to each first skin piece (SP2) with reference to the positioning portion H of each second face material (40a, 40b) constituting the back side of each first skin piece (SP2, SP3). , SP3) and each second skin piece (SP4, SP5) can be attached at an appropriate position.

[Example 2]
Since the vehicle seat of the second embodiment has substantially the same basic configuration as the vehicle seat 2 of the first embodiment, detailed description thereof will be omitted by adding corresponding reference numerals to the common structure. Also in the vehicle seat of the second embodiment, as shown in FIG. 2, the upper part of the seat cover 6S has the front skin piece SP1, the upper right skin piece SP2, the upper left skin piece SP3, the right Kamachi side skin piece SP4, and the like. It is formed of a left kamachi side epidermis piece SP5, a posterior epidermis piece SP6, and the like. The basic configuration of each of these skin pieces SP1 to SP6 and SP is substantially the same as the basic configuration of the corresponding member of the first embodiment.

In this embodiment, referring to FIGS. 14 and 15, the upper right skin piece SP2 corresponds to the first face material of the present invention, and the right Kamachi side skin piece SP4 corresponds to the second face material of the present invention. It is different from Example 1. Further, referring to FIG. 14, the third seam allowance 13 of the upper right skin piece SP2 corresponds to the first edge portion of the first face material of the present invention, and the seam allowances 17 and 18 of the right Kamachi side skin piece SP4 are the first seam allowances of the present invention. Corresponds to the second edge of the two-sided material. The third seam allowance 13 of the upper right skin piece SP2 and the seam allowances 17 and 18 of the right Kamachi side skin piece SP4 form almost all of the right side stitched portion 22.

Then, referring to FIG. 14, in the upper right skin piece SP2 as the first face material of the present embodiment, the first alignment portion N1 and the first completely missing portion 36a to 36h are directly provided in the third seam allowance 13. Has been done. Each of these completely notched portions 36a to 36h has substantially the same configuration as the corresponding first completely notched portion of Example 1. Further, in the right Kamachi side skin piece SP4 as the second face material, the second seam allowance 17 is directly provided with the second alignment portion N2 and the second notch portions 46a to 46e. Each of these second notch portions 46a to 46e has substantially the same configuration as the corresponding second notch portion of Example 1. Then, referring to FIG. 15, when the upper right epidermis piece SP2 and the right Kamachi side epidermis piece SP4 are sutured, they are overlapped in a middle surface shape. In this state, the first notch portions 36a to 36h and the second notch portions 46a to 46e are arranged so as to be staggered (at different positions). Therefore, the right seam allowance SEW2 can be received at at least one of the third seam allowance 13 and the seventh seam allowance 17, and the right seam allowance SEW2 can be prevented from falling off as much as possible.

Further, also in this embodiment, when the right side suture portion 22 is curved as shown in FIG. 2, the gap between the adjacent notch portions 36a to 36h (46a to 46e) is widened or reduced. By reducing the influence of the difference in peripheral length of the right side suture portion 22, it is possible to avoid excessive unevenness on the right side suture portion 22 as much as possible. In this way, also in this embodiment, the unevenness of the right side suture portion 22 is avoided as much as possible, so that the joint portion (right side suture line SEW2) of the upper right epidermis piece SP2 and the right Kamachi side epidermis piece SP4 is not meandered as much as possible. It can be arranged in a curved shape.

It should be noted that each of the first notch portions 36a to 36h of this embodiment is a notch portion of the surface material when the upper right skin piece SP2 is composed of the surface material, and has the surface material and the elastic material integrally. If so, it is a notch portion provided so as to penetrate both the surface material and the elastic material. Further, each of the second notch portions 46a to 46e is a notch portion of the surface material when the right kamachi side skin piece SP4 is composed of the surface material, and has the surface material and the elastic material integrally. In some cases, it is a notch portion provided so as to penetrate both the surface material and the elastic material. The surface material and the elastic material can be integrated by a method such as frame lamination.

The vehicle seat 2 of this embodiment is not limited to the above-described embodiment, and may take various other embodiments. In this embodiment, the configurations (shape, dimensions, arrangement position, bending direction, etc.) of the first skin piece (SP2, SP3), the second skin piece (SP4, SP5), and the sewn portion (22, 23) are illustrated. However, it is not intended to limit the configuration of each of these members and the sewn portion. For example, the first skin piece and the second skin piece can be arranged in plural or singular positions at appropriate positions on the seat pad, respectively. Further, the structure of the sutured portion can be appropriately changed according to the structure of both skin pieces, and can be arranged, for example, by being curved in an appropriate direction on the surface of the seat pad. Further, the sewn portion may be arranged on the stepped portion of the seat pad, or may be arranged directly on the seat pad. Further, the sutured portion can be tilted toward either the first epidermis piece or the second epidermis piece. The seam allowance of the second skin piece (SP4, SP5) may have the same seam allowance as the seam allowance of the first skin piece (SP2, SP3), and each notch portion may be provided. Further, the bead edge can be omitted as appropriate.

Further, in the present embodiment, the first face material (30a, 30b, etc.), the second face material (40a, 40b, etc.), each alignment part (N1, N2), and each notch part (35a to 35h, 45a to 45d) Etc.), but the configuration (shape, dimensions, formation position, number of formations, etc.) is illustrated, but it is not intended to limit the configuration of each of these face materials and parts. For example, the first edge portion of the first face material and the second edge portion of the second face material can be provided at an appropriate edge portion of the corresponding face material. Further, each alignment portion and each notch portion may be provided at a plurality or a single number at appropriate positions of the first edge portion and the second edge portion. Further, in the portion to be the sutured portion of the first epidermis piece, the first edge portion is arranged so as to protrude from the second edge portion to the outer edge side of the sutured portion, or at a position substantially coincided with the second edge portion. It is also possible to allow the second face material to protrude as long as the finish is not adversely affected. At the time of tacking the first face material and the second face material, the order of forming the suture lines for tacking can be changed as appropriate. For example, in this embodiment, the third suture line can be formed first. The first notch portion and the second notch portion may partially overlap as long as the finishability is not extremely deteriorated.

Further, in the present embodiment, the configuration (shape, dimensions, mounting method, etc.) of the maintenance portion 50 and the positioning portion H of the second face material is illustrated, but the configuration of each portion and each portion is not intended to be limited. For example, the maintenance portion can be adhered to the corresponding suture portion or the like with an adhesive or an adhesive material such as a hot melt material (both are adhesive layers). Further, the maintenance portion can be joined to the corresponding sutured portion or the like by a joining member such as a staple, can be attached by suturing to the corresponding sutured portion, or can be omitted. In addition, the alignment parts are sensuously positioned such as holes (through holes, through holes), slits and grooves provided in the second face material, colored parts whose positions can be visually grasped, and uneven parts. It is possible to adopt a configuration that can grasp.

Further, in the present embodiment, the configuration of the vehicle seat is illustrated, but the purpose is not to limit the configuration of the vehicle seat. Further, in this embodiment, the seat back has been described as an example, but the configuration of this embodiment can be applied to various seat constituent members such as a seat cushion, an armrest, and a headrest. The configuration of the present embodiment can be applied to all vehicle seats such as vehicles, aircraft, trains, and ships.

2 Vehicle seat 4 Seat cushion 6 Seat back 6F Seat frame 6P Seat pad 6a Seating part 6b Bank part 6ba Top plate side part 6bb Kamachi part 6c Top part 6d Rear part 7 Step part 6S Seat cover SP1 Front skin piece SP2 Upper right skin piece (First skin piece of the present invention)
SP3 upper left epidermis piece (first epidermis piece of the present invention)
SP4 Right Kamachi side epidermis piece (second epidermis piece of the present invention)
SP5 Left Kamachi side epidermis piece (second epidermis piece of the present invention)
SP6 Rear skin piece SPa Right seam allowance SPb Right side skin piece SPc Left side skin piece SPd Left side skin piece 11 First seam allowance 12 Second seam allowance 13 Third seam allowance (seam allowance of the first seam allowance of the present invention)
13a Third top seam allowance 13b Third bottom seam allowance 14 Fourth seam allowance 15 Fifth seam allowance 16 Sixth seam allowance (sewing allowance of the first skin piece of the present invention)
16a 6th top seam allowance 16b 6th bottom seam allowance 17 7th seam allowance (seam allowance of the second skin piece of the present invention)
18 Eighth seam allowance (seam allowance of the second skin piece of the present invention)
19 Ninth seam allowance (seam allowance of the second skin piece of the present invention)
20 Tenth seam allowance (seam allowance of the second skin piece of the present invention)
21 Central suture portion 22 Right suture portion (suture portion of the present invention)
23 Left side suture portion (suture portion of the present invention)
30 Surface material 30a Right surface material (first surface material of the present invention)
30b Left side surface material (first surface material of the present invention)
31 Lower edge 32 Left edge 33 Right edge (first edge of the present invention)
33a Upper right edge part 33b Lower right edge part 35a-35h, 35x First notch part 40 Front elastic material 40a Right elastic body (second face material of the present invention)
40b Left elastic material (second face material of the present invention)
40x elastic material 41 lower elastic side edge 42 left elastic side edge 43 right elastic side edge (second edge of the present invention)
43a Upper right elastic side edge part 43b Lower right elastic side edge part 45a to 45d, 45x Second notch part 50 Maintenance part H Positioning part N Positioning part N 1 First alignment part N2 Second alignment part see1 to saw3 (temporary sewing) Suture line SEW1 Central suture line SEW2 Right suture line SEW3 Left suture line WM Ball edge

Claims (5)

A plurality of skin pieces and a suture portion in which seam allowances of adjacent skin pieces are sewn with suture lines are provided, and at least a part of the plurality of skin pieces is a first surface material capable of forming a design surface. , The second face material, and the edges of the first face material and the second face material form at least a part of the suture portion in a state where they are aligned and sewn together. In the seat cover of the vehicle seat
The first edge portion of the first face material is provided with a first alignment portion and a first notch portion in which the outer edge of the first edge portion is cut out deeper than the first alignment portion. At the same time, the second edge portion of the second face material has a second alignment portion and a second notch portion in which the outer edge of the second edge portion is cut out deeper than the second alignment portion. And are provided,
The first edge portion and the second edge portion are sewn in a state where the first alignment portion and the second alignment portion are aligned, and the first notch portion is the suture portion. A seat cover for a vehicle seat that is arranged at a position different from the second notch portion in the extending direction. The sutured portion is formed by suturing the seam allowances of the first epidermis piece and the second epidermis piece, and the first epidermis piece is elastic with the first face material made of leather or cloth. It is formed by suturing the second face material that can be expanded and contracted on top of each other.
The vehicle seat according to claim 1, wherein the first edge portion is arranged so as to project from the second edge portion to the outer edge side of the suture portion in a portion to be a suture portion of the first skin piece. Seat Cover. The sutured portion is formed by suturing the seam allowances of the first epidermis piece and the second epidermis piece, and the first epidermis piece is elastic with the first face material made of leather or cloth. It is formed by suturing the second face material that can be expanded and contracted on top of each other.
The first epidermis piece side has a planar maintenance portion that maintains the sutured portion in a tilted state, and the maintenance portion includes a portion that becomes the suture portion of the second epidermis piece and the first epidermis piece. The seat cover of the vehicle seat according to claim 1 or 2, which is adhered and attached while straddling the back side of the vehicle. The seat cover for a vehicle seat according to claim 3, wherein the second face material is provided with a positioning portion that serves as a positioning portion with the maintenance portion. In the manufacturing method for manufacturing a seat cover for a vehicle seat according to any one of claims 2 to 4.
The peripheral edge of the first face material is divided into the first edge portion and another edge portion in which the first notched portion is not formed.
In a state where the first face material is arranged so as to project toward the outer edge side of the suture portion from the second face material, the other edge portion is sewn to the second face material, and then the first edge portion is said. A method for manufacturing a seat cover for a vehicle seat to be sewn to the second edge.

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