JP6572777B2 - Sewing structure and vehicle skin material provided with the same - Google Patents

Sewing structure and vehicle skin material provided with the same Download PDF

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JP6572777B2
JP6572777B2 JP2016002520A JP2016002520A JP6572777B2 JP 6572777 B2 JP6572777 B2 JP 6572777B2 JP 2016002520 A JP2016002520 A JP 2016002520A JP 2016002520 A JP2016002520 A JP 2016002520A JP 6572777 B2 JP6572777 B2 JP 6572777B2
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skin piece
skin
sewing
stitching
seam allowance
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JP2017121412A (en
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山下　文男
文男 山下
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Toyota Boshoku Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/58—Seat coverings
    • B60N2/5816—Seat coverings attachments thereof
    • B60N2/5883—Seat coverings attachments thereof by sewing, stitching or threading
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G7/00—Making upholstery

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Manufacturing & Machinery (AREA)
  • Sewing Machines And Sewing (AREA)
  • Seats For Vehicles (AREA)

Description

本発明は、縫製構造及びこれを備えた乗物用シートの表皮材に関する。   The present invention relates to a sewing structure and a skin material for a vehicle seat including the sewing structure.

従来、例えば、車両用シートの表皮材は、複数枚の布状の表皮片を縫い合わせて構成されている（特許文献１参照）。表皮材は、３枚以上の表皮片を互いに縫い合わせ、それらの表皮片が１点で合流する縫い合わせ合流部を有するものがある。縫い合わせ合流部は、車両用シートの形状等に合わせて、少し窪ませて凹状等にする。   Conventionally, for example, a skin material of a vehicle seat is configured by sewing a plurality of cloth-like skin pieces (see Patent Document 1). Some skin materials have a stitching and joining portion where three or more skin pieces are stitched together and the skin pieces join at one point. The merging / merging portion is slightly depressed to form a concave shape in accordance with the shape of the vehicle seat.

例えば、３枚の表皮片（第１表皮片、第２表皮片、第３表皮片）で縫い合わせ合流部を形成する場合、まず、第１表皮片の角部を形成する一の端縁部と第２表皮片の角部を形成する一の端縁部とを互いに縫い代を設けて縫い合わせる。次いで、第１表皮片の角部を形成する他の端縁部及び第２表皮片の角部を形成する他の端縁部と第３表皮片の端縁部とを互いに縫い代を設けて縫い合わせる。これにより、３枚の表皮片で縫い合わせ合流部が形成される。   For example, in the case of forming a stitched and merged portion with three skin pieces (first skin piece, second skin piece, and third skin piece), first, one edge portion that forms the corner of the first skin piece; The one edge part which forms the corner | angular part of a 2nd skin piece is mutually sewn, and a seam allowance is provided. Next, the other edge portion forming the corner portion of the first skin piece, the other edge portion forming the corner portion of the second skin piece, and the edge portion of the third skin piece are sewn together with a seam allowance. . Thereby, the stitching | merging junction part is formed with three skin pieces.

特開２０１５−２０２号公報JP-A-2015-202

しかしながら、上述のように、３枚の表皮片で縫い合わせ合流部を形成する場合、第１表皮片の一の端縁部と第２表皮片の一の端縁部とを縫い合わせる際に、第１表皮片及び第２表皮片の端末まで縫い合わせていた。このとき、第１表皮片及び第２表皮片における第３表皮片との縫い代を含めて縫い合わせていた。そして、そのような状態の第１表皮片及び第２表皮片と第３表皮片とを縫い合わせていた。   However, as described above, when the stitching and joining portion is formed by the three skin pieces, when the one edge portion of the first skin piece and the one edge portion of the second skin piece are stitched together, The ends of the skin pieces and the second skin pieces were sewn together. At this time, the first skin piece and the second skin piece were sewn together including the seam allowance with the third skin piece. And the 1st skin piece of such a state, the 2nd skin piece, and the 3rd skin piece were stitched together.

そのため、３枚の表皮片で縫い合わせ合流部を形成し、その縫い合わせ合流部を例えば凹状にしたときに、第１表皮片及び第２表皮片における第３表皮片との縫い代同士が縫い合わせていることで、それらの縫い代同士が開かずに突っ張った状態となり、縫い合わせ合流部において縫い代に起因するシワが発生する。車両用シートに優れた意匠性が要求される場合、特に問題となる。また、縫い代に起因するシワ発生を抑制するために、縫い代のうちシワ発生に影響する部分を予めカットしておく等の方法もあるが、生産性の低下を招いてしまう。   Therefore, the seam allowance with the 3rd skin piece in the 1st skin piece and the 2nd skin piece is stitched together when the seam joining part is formed by three skin pieces and the seam joining part is made concave, for example. Thus, the seam allowances are stretched without opening, and wrinkles due to the seam allowance are generated at the seam joining portion. This is particularly a problem when an excellent design is required for the vehicle seat. Further, in order to suppress the occurrence of wrinkles due to the seam allowance, there is a method in which a portion of the seam allowance that affects the wrinkle generation is cut in advance, but this leads to a decrease in productivity.

本発明は、かかる背景に鑑みてなされたものであり、縫い代に起因する縫い合わせ合流部のシワ発生を抑制でき、意匠性を向上させることができる縫製構造及びこれを備えた乗物用シートの表皮材を提供する。   The present invention has been made in view of such a background, and can suppress the generation of wrinkles at a stitching and joining portion due to a seam allowance, and can improve a design property and a skin material for a vehicle seat including the sewing structure. I will provide a.

本発明の一の態様である縫製構造は、第１被縫製材と、第１被縫製材と縫い合わされた第２被縫製材と、第１被縫製材及び前記第２被縫製材と縫い合わされた第３被縫製材と、を備え、第１被縫製材は、第２被縫製材との縫い代である第１Ａ縫い代と、第３被縫製材との縫い代である第１Ｂ縫い代と、第１Ａ縫い代と第１Ｂ縫い代とが重なる第１重合部と、を有し、第２被縫製材は、第１被縫製材との縫い代である第２Ａ縫い代と、第３被縫製材との縫い代である第２Ｂ縫い代と、第２Ａ縫い代と第２Ｂ縫い代とが重なる第２重合部と、を有し、第３被縫製材は、第１被縫製材及び第２被縫製材との縫い代である第３縫い代を有し、第１被縫製材と第２被縫製材とが縫い合わされた第１縫合部は、その一端が第１被縫製材及び第２被縫製材と第３被縫製材とが縫い合わされた第２縫合部の位置まで延び、かつ、第１被縫製材の第１重合部及び第２被縫製材の第２重合部に存在しない。   A sewing structure according to one aspect of the present invention is sewn together with a first sewing material, a second sewing material stitched with the first sewing material, the first sewing material, and the second sewing material. A first sewing material, a first sewing allowance that is a sewing allowance with the second sewing material, a first B sewing allowance that is a sewing allowance with the third sewing material, and a first A A first overlap portion where the seam allowance and the 1B seam allowance overlap, and the second material to be sewn is a seam allowance between the second A seam allowance and the third material sewn with the first material sewn A second overlap portion where the 2B seam allowance and the 2B seam allowance overlap, and the third sewing material is a seam allowance between the first sewing material and the second sewing material. The first stitching portion having a seam allowance and the first sewing material and the second sewing material being stitched together has one end thereof connected to the first sewing material and the second sewing material. 3 extends to a position of the second seam portion and the sewing material is sewn, and not in the second polymerization of the first polymer portion of the first sewing material and the second sewing material.

上記縫製構造によれば、第１縫合部は、その一端が第２縫合部の位置まで延び、かつ、第１被縫製材の第１重合部及び第２被縫製材の第２重合部に存在しない。すなわち、第１被縫製材における第３被縫製材との縫い代である第１Ｂ縫い代（第１重合部）と第２被縫製材における第３被縫製材との縫い代である第２Ｂ縫い代（第２重合部）とが縫い合わされないように、第１被縫製材と第２被縫製材とが縫い合わされている。   According to the above sewing structure, the first stitching portion has one end extending to the position of the second stitching portion, and is present in the first overlapping portion of the first sewing material and the second overlapping portion of the second sewing material. do not do. That is, the 1B sewing allowance (the first overlapping portion) which is a sewing allowance with the third sewing material in the first sewing material and the 2B sewing allowance (the second sewing allowance with the third sewing material in the second sewing material). The first material to be sewn and the second material to be sewn are sewn together so that the overlapping portion) is not sewn together.

そのため、例えば、第１被縫製材、第２被縫製材及び第３被縫製材を互いに縫い合わせ、それらが合流する縫い合わせ合流部を形成し、その縫い合わせ合流部を凹状にした場合であっても、縫い合わせ合流部のシワ発生を抑制できる。すなわち、第１被縫製材の第１Ｂ縫い代（第１重合部）と第２被縫製材の第２Ｂ縫い代（第２重合部）とが縫い合わされておらず、互いに開ける状態となるから、従来のような縫い代に起因する縫い合わせ合流部のシワ発生を抑制できる。また、従来のように縫い代の一部を予めカットしておく等の作業も不要であり、生産性の低下を招くこともない。   Therefore, for example, even when the first sewing material, the second sewing material, and the third sewing material are stitched together to form a sewing joint portion where they join, and the sewing joint portion is concave. It is possible to suppress wrinkling at the sewing and joining portion. That is, since the 1B sewing allowance (first overlapping portion) of the first sewing material and the second B sewing allowance (second overlapping portion) of the second sewing material are not stitched together, they are in a state of opening each other. It is possible to suppress the occurrence of wrinkles at the seam joining portion due to such a seam allowance. Further, a work such as cutting a part of the seam allowance in advance as in the prior art is unnecessary, and the productivity is not reduced.

また、上記縫製構造を有する縫製材等は、上述したように、縫い合わせ合流部のシワ発生を抑制できるため、仕上がりが良好なものとなり、形状追従性を高めることができ、意匠性を向上させることができる。これにより、優れた意匠性が要求される縫製材等への適用が有効となる。   In addition, as described above, the sewing material having the above-described sewing structure can suppress the generation of wrinkles at the stitching and joining portion, so that the finish becomes good, the shape following property can be improved, and the design property is improved. Can do. Thereby, the application to the sewing material etc. with which the outstanding design property is requested | required becomes effective.

本発明の他の態様である乗物用シートの表皮材は、上記縫製構造を備えている。そのため、上述した縫製構造と同様の作用効果が得られる。特に、表皮材の縫い合わせ合流部のシワ発生を抑制できるため、表皮材の仕上がりが良好なものとなり、乗物用シートに対する表皮材の形状追従性を高めることができる。また、表皮材によって乗物用シートの意匠性を向上させることができる。   A skin material for a vehicle seat according to another aspect of the present invention has the above-described sewing structure. Therefore, the same effect as the sewing structure described above can be obtained. In particular, since the generation of wrinkles at the stitching and joining portion of the skin material can be suppressed, the finish of the skin material becomes good, and the shape followability of the skin material to the vehicle seat can be enhanced. Further, the design of the vehicle seat can be improved by the skin material.

自動車用のフロントシートを示す斜視図である。It is a perspective view which shows the front seat for motor vehicles. （Ａ）はシートクッションのＡ部分の表面側を示す斜視図であり、（Ｂ）はシートクッションのＡ部分の裏面側を示す斜視図である。(A) is a perspective view which shows the surface side of A part of a seat cushion, (B) is a perspective view which shows the back surface side of A part of a seat cushion. （Ａ）〜（Ｃ）は第１表皮片と第２表皮片とを縫い合わせる作業を示す説明図である。(A)-(C) are explanatory drawings which show the operation | work which stitches together a 1st skin piece and a 2nd skin piece. （Ａ）は縫い合わされた第１表皮片及び第２表皮片の表面側を示す斜視図であり、（Ｂ）は縫い合わされた第１表皮片及び第２表皮片の断面を示す断面図であり、（Ｃ）は縫い合わされた第１表皮片及び第２表皮片の裏面側を示す斜視図である。(A) is a perspective view which shows the surface side of the 1st skin piece and 2nd skin piece which were stitched together, (B) is sectional drawing which shows the cross section of the 1st skin piece and 2nd skin piece which were stitched together (C) is a perspective view which shows the back surface side of the 1st skin piece and the 2nd skin piece which were stitched together. （Ａ）〜（Ｃ）は第１表皮片及び第２表皮片と第３表皮片とを縫い合わせる作業を示す説明図である。(A)-(C) is explanatory drawing which shows the operation | work which stitches together the 1st skin piece, the 2nd skin piece, and the 3rd skin piece. （Ａ）はシートバックのＢ部分の表面側を示す斜視図であり、（Ｂ）はシートバックのＢ部分の裏面側を示す斜視図である。(A) is a perspective view which shows the surface side of B part of a seat back, (B) is a perspective view which shows the back surface side of B part of a seat back. （Ａ）〜（Ｃ）は２組の第１表皮片及び第２表皮片を縫い合わせる作業を示す説明図である。(A)-(C) is explanatory drawing which shows the operation | work which stitches together 2 sets of 1st skin pieces and 2nd skin pieces. 自動車用のリアシートの一部を示す斜視図である。It is a perspective view which shows a part of rear seat for motor vehicles. （Ａ）はアームレスト収容凹部のＣ部分の表面側を示す斜視図であり、（Ｂ）はアームレスト収容凹部のＣ部分の裏面側を示す斜視図である。(A) is a perspective view which shows the surface side of C part of an armrest accommodation recessed part, (B) is a perspective view which shows the back surface side of C part of an armrest accommodation recessed part. （Ａ）〜（Ｃ）は第１表皮片と第３表皮片とを縫い合わせる作業を示す説明図である。(A)-(C) are explanatory drawings which show the operation | work which stitches together a 1st skin piece and a 3rd skin piece. （Ａ）及び（Ｂ）は第２表皮片と第３表皮片とを縫い合わせる作業を示す説明図である。(A) And (B) is explanatory drawing which shows the operation | work which stitches together a 2nd skin piece and a 3rd skin piece.

以下、本発明の実施形態を図面と共に説明する。
（実施形態１）
本実施形態は、本発明の縫製構造を自動車用シート（フロントシート）の表皮材に適用した例である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
The present embodiment is an example in which the sewing structure of the present invention is applied to a skin material of an automobile seat (front seat).

図１に示すように、自動車用のフロントシート７０は、乗員の着座部となるシートクッション７１、乗員の背もたれとなるシートバック７２、乗員の頭部の支えとなるヘッドレスト７３等を備えている。   As shown in FIG. 1, a front seat 70 for an automobile includes a seat cushion 71 that serves as a seat for the occupant, a seat back 72 that serves as the back of the occupant, and a headrest 73 that supports the head of the occupant.

シートクッション７１、シートバック７２及びヘッドレスト７３は、それぞれ、骨格となるフレーム部（図示略）と、フレームの乗員着座側に配置された緩衝体であるパッド部（図示略）と、フレーム部及びパッド部の表面を覆う袋状の表皮材７１１、７２１、７３１とを備えている。パッド部は、ウレタン樹脂の発泡成形体により構成されている。表皮材７１１、７２１、７３１は、例えばレザーにより構成されている。表皮材７１１、７２１、７３１は、複数の表皮片を縫い合わせて構成されている。   The seat cushion 71, the seat back 72, and the headrest 73 are each composed of a frame portion (not shown) serving as a skeleton, a pad portion (not shown) that is a buffer disposed on the passenger seating side of the frame, a frame portion and a pad. And pouch-shaped skin materials 711, 721, and 731 that cover the surface of the portion. The pad portion is formed of a urethane resin foam molded body. The skin materials 711, 721, 731 are made of leather, for example. The skin materials 711, 721, 731 are configured by sewing a plurality of skin pieces.

図２（Ａ）、（Ｂ）に示すように、シートクッション７１の表皮材７１１は、３枚の表皮片（第１表皮片１０、第２表皮片２０、第３表皮片３０）が互いに縫い合わされ、その３枚の表皮片が１点で合流して形成された凹状（凹面状）の縫い合わせ合流部７１２を有する。縫い合わせ合流部７１２は、縫製構造１を有する。以下、縫製構造１について詳細に説明する。なお、図２（Ａ）は、図１のシートクッション７１のＡ部分を拡大して示した図である。   As shown in FIGS. 2A and 2B, the skin material 711 of the seat cushion 71 has three skin pieces (first skin piece 10, second skin piece 20, and third skin piece 30) sewn together. The three skin pieces have a concave (concave surface) stitching and joining portion 712 formed by joining at one point. The stitching and joining portion 712 has a sewing structure 1. Hereinafter, the sewing structure 1 will be described in detail. FIG. 2A is an enlarged view of a portion A of the seat cushion 71 in FIG.

図２（Ａ）、（Ｂ）に示すように、縫製構造１は、第１表皮片（第１被縫製材）１０と、第１表皮片１０と縫い合わされた第２表皮片（第２被縫製材）２０と、第１表皮片１０及び第２表皮片２０と縫い合わされた第３表皮片（第３被縫製材）３０とを備えている。   As shown in FIGS. 2 (A) and 2 (B), the sewing structure 1 includes a first skin piece (first sewing material) 10 and a second skin piece (second workpiece) sewn together with the first skin piece 10. Sewing material) 20 and a first skin piece 10 and a third skin piece (third sewing material) 30 that are sewn together with the second skin piece 20.

第１表皮片１０は、表皮材７１１の表面側部分及び裏面側部分を構成する表面１０１及び裏面１０２を有する。第２表皮片２０も同様に表面２０１及び裏面２０２を有する。第３表皮片３０も同様に表面３０１及び裏面３０２を有する。   The first skin piece 10 has a front surface 101 and a back surface 102 that constitute a front surface side portion and a back surface side portion of the skin material 711. Similarly, the second skin piece 20 has a front surface 201 and a back surface 202. Similarly, the third skin piece 30 has a front surface 301 and a back surface 302.

第１表皮片１０の角部を形成する一の端縁部には、第２表皮片２０との縫い代部分である第１Ａ縫い代１１が形成され、他の端縁部には、第３表皮片３０との縫い代部分である第１Ｂ縫い代１２が形成されている。第１表皮片１０の角部には、第１Ａ縫い代１１の一部と第１Ｂ縫い代１２の一部とが重なり合った第１重合部１３が形成されている。   The 1A seam allowance 11 which is a seam allowance part with the 2nd skin piece 20 is formed in one edge part which forms the corner | angular part of the 1st skin piece 10, and the 3rd skin piece is formed in the other edge part. A first B seam allowance 12, which is a seam allowance part 30, is formed. A first overlapping portion 13 in which a part of the first A seam allowance 11 and a part of the first B seam allowance 12 overlap each other is formed at the corner of the first skin piece 10.

第２表皮片２０の角部を形成する一の端縁部には、第１表皮片１０との縫い代部分である第２Ａ縫い代２１が形成され、他の端縁部には、第３表皮片３０との縫い代部分である第２Ｂ縫い代２２が形成されている。第２表皮片２０の角部には、第２Ａ縫い代２１の一部と第２Ｂ縫い代２２の一部とが重なり合った第２重合部２３が形成されている。   A second A seam allowance 21 which is a seam allowance portion with the first skin piece 10 is formed at one end edge part forming the corner of the second skin piece 20, and a third skin piece is provided at the other end edge part. A second B seam allowance 22, which is a seam allowance portion with 30, is formed. A second overlapping portion 23 in which a part of the second A seam allowance 21 and a part of the second B seam allowance 22 overlap each other is formed at the corner of the second skin piece 20.

第３表皮片３０の端縁部には、第１表皮片１０及び第２表皮片２０との縫い代部分である第３縫い代３１が形成されている。第３縫い代３１は、第１表皮片１０との縫い代部分と第２表皮片２０との縫い代部分とが繋がって構成されている。   A third seam allowance 31, which is a seam allowance between the first skin piece 10 and the second skin piece 20, is formed at the edge of the third skin piece 30. The third seam allowance 31 is configured by connecting a seam allowance part with the first skin piece 10 and a seam allowance part with the second skin piece 20.

第１表皮片１０の一の端縁部と第２表皮片２０の一の端縁部とは、ミシン等を用いて縫い糸により縫い合わされている。第１表皮片１０と第２表皮片２０とが縫い合わされた部分には、直線状の第１縫合部５１が形成されている。   One end edge portion of the first skin piece 10 and one end edge portion of the second skin piece 20 are sewn together with a sewing thread using a sewing machine or the like. A straight first stitched portion 51 is formed at a portion where the first skin piece 10 and the second skin piece 20 are stitched together.

第１縫合部５１は、第１表皮片１０と第２表皮片２０との縫い目部分である。第１表皮片１０の第１Ａ縫い代１１及び第２表皮片２０の第２Ａ縫い代２１は、第１表皮片１０及び第２表皮片２０の裏面側に折り込まれている。   The first stitching portion 51 is a seam portion between the first skin piece 10 and the second skin piece 20. The first A seam allowance 11 of the first skin piece 10 and the second A seam allowance 21 of the second skin piece 20 are folded on the back side of the first skin piece 10 and the second skin piece 20.

第１表皮片１０の他の端縁部及び第２表皮片２０の他の端縁部と第３表皮片３０の端縁部とは、ミシン等を用いて縫い糸により縫い合わされている。第１表皮片１０及び第２表皮片２０と第３表皮片３０とが縫い合わされた部分には、直線状の第２縫合部５２が形成されている。   The other edge portion of the first skin piece 10, the other edge portion of the second skin piece 20, and the edge portion of the third skin piece 30 are sewn together with a sewing thread using a sewing machine or the like. A straight second stitching portion 52 is formed at a portion where the first skin piece 10 and the second skin piece 20 and the third skin piece 30 are stitched together.

第２縫合部５２は、第１表皮片１０及び第２表皮片２０と第３表皮片３０との縫い目部分である。第１表皮片１０の第１Ｂ縫い代１２、第２表皮片２０の第２Ｂ縫い代２２及び第３表皮片３０の第３縫い代３１は、第１表皮片１０、第２表皮片２０及び第３表皮片３０の裏面側に折り込まれている。   The second stitching portion 52 is a seam portion between the first skin piece 10 and the second skin piece 20 and the third skin piece 30. The 1st B skin allowance 12 of the 1st skin piece 10, the 2nd B seam allowance 22 of the 2nd skin piece 20, and the 3rd seam allowance 31 of the 3rd skin piece 30 are the 1st skin piece 10, the 2nd skin piece 20, and the 3rd skin piece. 30 is folded on the back side.

第１縫合部５１は、その一端５１１が第２縫合部５２の位置まで延びており、第２縫合部５２を超えないように形成されている。すなわち、第１縫合部５１は、第１表皮片１０の第１重合部１３及び第２表皮片２０の第２重合部２３に存在しない。なお、第１縫合部５１は、その一端５１１が第２縫合部５２に達するように形成されていてもよいし、その手前近傍まで形成されていてもよい。   The first stitching portion 51 has one end 511 extending to the position of the second stitching portion 52 and is formed so as not to exceed the second stitching portion 52. That is, the first stitching portion 51 does not exist in the first overlapping portion 13 of the first skin piece 10 and the second overlapping portion 23 of the second skin piece 20. In addition, the 1st stitching | suture part 51 may be formed so that the end 511 may reach the 2nd stitching part 52, and may be formed to the near side.

第１表皮片１０の第１Ｂ縫い代１２と第２表皮片２０の第２Ｂ縫い代２２とは、縫い合わされていない。具体的には、第１表皮片１０の第１重合部１３と第２表皮片２０の第２重合部２３とは、縫い合わされていない。第１縫合部５１と第２縫合部５２との合流点５０を基点として、第１Ｂ縫い代１２（第１重合部１３）と第２Ｂ縫い代２２（第２重合部２３）とが開ける状態となっている。   The first B seam allowance 12 of the first skin piece 10 and the second B seam allowance 22 of the second skin piece 20 are not stitched together. Specifically, the first overlapping portion 13 of the first skin piece 10 and the second overlapping portion 23 of the second skin piece 20 are not stitched together. The first B seam allowance 12 (first superposed part 13) and the second B seam allowance 22 (second superposed part 23) are opened from the merging point 50 of the first stitched part 51 and the second stitched part 52 as a base point. Yes.

次に、シートクッション７１の表皮材７１１の製造方法について説明する。ここでは、特に、凹状（凹面状）の縫い合わせ合流部７１２の縫製構造１の作製を中心に説明する。
まず、図３（Ａ）に示すように、第１表皮片１０と第２表皮片２０との２枚の表皮片を準備する。 Next, a method for manufacturing the skin material 711 of the seat cushion 71 will be described. Here, in particular, the description will be focused on the production of the sewing structure 1 of the concave (concave surface) stitching and joining portion 712.
First, as shown in FIG. 3 (A), two skin pieces, a first skin piece 10 and a second skin piece 20, are prepared.

第１表皮片１０の一の端縁部には、第２表皮片２０との縫い合わせ位置である第１Ａ縫合位置１１１を、他の端縁部には、第３表皮片３０との縫い合わせ位置である第１Ｂ縫合位置１２１をそれぞれ点線で示す。第１表皮片１０の一の端縁部において、第１Ａ縫合位置１１１よりも外側の領域が第１Ａ縫い代１１であり、他の端縁部において、第１Ｂ縫合位置１２１よりも外側の領域が第１Ｂ縫い代１２である。   A first A stitching position 111 that is a sewing position with the second skin piece 20 is provided at one end edge portion of the first skin piece 10, and a sewing position with the third skin piece 30 is provided at the other edge portion. Each 1B stitching position 121 is indicated by a dotted line. A region outside the first A stitching position 111 at one end edge of the first skin piece 10 is the first A seam allowance 11, and a region outside the first B stitching position 121 at the other edge is the first margin. 1B seam allowance is 12.

第２表皮片２０の一の端縁部には、第１表皮片１０との縫い合わせ位置である第２Ａ縫合位置２１１を、他の端縁部には、第３表皮片３０との縫い合わせ位置である第２Ｂ縫合位置２２１をそれぞれ点線で示す。第２表皮片２０の一の端縁部において、第２Ａ縫合位置２１１よりも外側の領域が第２Ａ縫い代２１であり、他の端縁部において、第２Ｂ縫合位置２２１よりも外側の領域が第２Ｂ縫い代２２である。   A second A stitching position 211 that is a sewing position with the first skin piece 10 is provided at one end edge portion of the second skin piece 20, and a sewing position with the third skin piece 30 is provided at the other edge portion. Each 2B stitching position 221 is indicated by a dotted line. A region outside the second A stitching position 211 at one end edge of the second skin piece 20 is the second A seam allowance 21, and a region outside the second B stitching position 221 is defined at the other edge. This is a 2B seam allowance 22.

次いで、図３（Ｂ）に示すように、第１表皮片１０の表面１０１と第２表皮片２０の表面２０１とが向かい合うように、第１表皮片１０と第２表皮片２０とを重ね合わせる。このとき、第１Ａ縫合位置１１１と第２Ａ縫合位置２１１とが合わさるように、また第１Ｂ縫合位置１２１と第２Ｂ縫合位置２２１とが合わさるように、第１表皮片１０と第２表皮片２０とを重ね合わせる。   Next, as shown in FIG. 3 (B), the first skin piece 10 and the second skin piece 20 are overlapped so that the surface 101 of the first skin piece 10 and the surface 201 of the second skin piece 20 face each other. . At this time, the first skin piece 10 and the second skin piece 20 are arranged so that the first A stitching position 111 and the second A stitching position 211 are aligned, and so that the first B stitching position 121 and the second B stitching position 221 are matched. Are superimposed.

次いで、図３（Ｃ）に示すように、第１表皮片１０の第１Ａ縫合位置１１１と第２表皮片２０の第２Ｂ縫合位置２１１とを、ミシン等を用いて縫い糸により縫い合わせる。このとき、図中の矢印の方向に向かって、第１Ｂ縫合位置１２１及び第２Ｂ縫合位置２２１まで縫い合わせ、第１Ｂ縫い代１２（第１重合部１３）と第２Ｂ縫い代２２（第２重合部２３）とを縫い合わせないようにする。すなわち、第１表皮片１０の一の端縁部と第２表皮片２０の一の端縁部とを端末まで縫い合わせず、その手前まで縫い合わせる。これにより、第１表皮片１０と第２表皮片２０とが縫い合わされた部分に第１縫合部５１が形成される。   Next, as shown in FIG. 3C, the first A stitching position 111 of the first skin piece 10 and the second B stitching position 211 of the second skin piece 20 are sewn together with a sewing thread using a sewing machine or the like. At this time, stitching is performed up to the first B stitching position 121 and the second B stitching position 221 in the direction of the arrow in the figure, and the first B stitching allowance 12 (first overlapping portion 13) and the second B stitching allowance 22 (second overlapping portion 23). Do not sew together. That is, one end edge portion of the first skin piece 10 and one end edge portion of the second skin piece 20 are not sewn up to the terminal, but are sewn up to the front. Thereby, the 1st sewing part 51 is formed in the part by which the 1st skin piece 10 and the 2nd skin piece 20 were stitched together.

次いで、図４（Ａ）に示すように、第１表皮片１０と第２表皮片２０とが縫い合わされた状態で、第１表皮片１０の表面１０１と第２表皮片２０の表面２０１とが同じ方向を向くように、第１縫合部５１を基点として第２表皮片２０を裏返す。   Next, as shown in FIG. 4A, the surface 101 of the first skin piece 10 and the surface 201 of the second skin piece 20 are in a state where the first skin piece 10 and the second skin piece 20 are stitched together. The second skin piece 20 is turned over with the first stitched portion 51 as a base point so as to face the same direction.

図４（Ｂ）に示すように、第１表皮片１０と第２表皮片２０とが第１縫合部５１を構成する縫い糸によって縫い合わされた状態であるが、この状態では、第１表皮片１０及び第２表皮片２０の表面側から第１縫合部５１が見えないようになっている。   As shown in FIG. 4B, the first skin piece 10 and the second skin piece 20 are stitched together by the sewing thread constituting the first stitching portion 51. In this state, the first skin piece 10 And the 1st stitching | suture part 51 cannot be seen from the surface side of the 2nd skin piece 20. FIG.

図４（Ｃ）に示すように、第１表皮片１０の第１Ｂ縫い代１２と第２表皮片２０の第２Ｂ縫い代２２とは縫い合わされておらず、第１縫合部５１の一端５１１を基点として、第１Ｂ縫い代１２（第１重合部１３）と第２Ｂ縫い代２２（第２重合部２３）とが開ける状態となっている。   As shown in FIG. 4 (C), the first B seam allowance 12 of the first skin piece 10 and the second B seam allowance 22 of the second skin piece 20 are not stitched together, and one end 511 of the first stitching portion 51 is used as a base point. The first B seam allowance 12 (first overlapping portion 13) and the second B seam allowance 22 (second overlapping portion 23) are open.

次いで、図５（Ａ）に示すように、第３表皮片３０を準備する。第３表皮片３０の端縁部には、第１表皮片１０及び第２表皮片２０との縫い合わせ位置である第３縫合位置３１１を点線で示す。第３表皮片３０の端縁部において、第３縫合位置３１１よりも外側の領域が第３縫い代３１である。   Next, as shown in FIG. 5A, a third skin piece 30 is prepared. A third stitching position 311 that is a stitching position between the first skin piece 10 and the second skin piece 20 is indicated by a dotted line on the edge portion of the third skin piece 30. A region outside the third stitching position 311 at the end edge portion of the third skin piece 30 is a third seam allowance 31.

次いで、図５（Ｂ）に示すように、第１表皮片１０の表面１０１及び第２表皮片２０の表面２０１と第３表皮片３０の表面３０１とが向かい合うように、第１表皮片１０及び第２表皮片２０と第３表皮片３０とを重ね合わせる。このとき、第１Ｂ縫合位置１２１及び第２Ｂ縫合位置２２１と第３縫合位置３１１とが合わさるように、第１表皮片１０及び第２表皮片２０と第３表皮片３０とを重ね合わせる。   Next, as shown in FIG. 5B, the first skin piece 10 and the surface 101 of the first skin piece 10 and the surface 201 of the second skin piece 20 and the surface 301 of the third skin piece 30 face each other. The second skin piece 20 and the third skin piece 30 are overlapped. At this time, the first skin piece 10, the second skin piece 20, and the third skin piece 30 are overlapped so that the first B stitching position 121, the second B stitching position 221 and the third stitching position 311 are aligned.

次いで、図５（Ｃ）に示すように、第１表皮片１０の第１Ｂ縫合位置１２１及び第２表皮片２０の第２Ｂ縫合位置２２１と第３表皮片３０の第３縫合位置３１１とを、ミシン等を用いて縫い糸により図中の矢印の方向に向かって縫い合わせる。これにより、第１表皮片１０及び第２表皮片２０と第３表皮片３０とが縫い合わされた部分に第２縫合部５２が形成される。第２縫合部５２は、第１縫合部５１の一端５１１において第１縫合部５１と合流し、合流点５０が形成される。   Next, as shown in FIG. 5 (C), the first B stitch position 121 of the first skin piece 10, the second B stitch position 221 of the second skin piece 20, and the third stitch position 311 of the third skin piece 30, Using a sewing machine or the like, sew together with the sewing thread in the direction of the arrow in the figure. Thereby, the 2nd sewing part 52 is formed in the part by which the 1st skin piece 10, the 2nd skin piece 20, and the 3rd skin piece 30 were stitched together. The second stitching part 52 merges with the first stitching part 51 at one end 511 of the first stitching part 51, and a joining point 50 is formed.

その後、第１表皮片１０及び第２表皮片２０と第３表皮片３０とが縫い合わされた状態で、第１表皮片１０の表面１０１及び第２表皮片２０の表面２０１と第３表皮片３０の表面３０１とが同じ方向を向くように、第２縫合部５２を基点として第１表皮片１０及び第２表皮片２０を裏返す。   Thereafter, in a state where the first skin piece 10, the second skin piece 20, and the third skin piece 30 are stitched together, the surface 101 of the first skin piece 10, the surface 201 of the second skin piece 20, and the third skin piece 30 The first skin piece 10 and the second skin piece 20 are turned upside down with the second stitching portion 52 as a base point so that the surface 301 faces the same direction.

以上により、図２（Ａ）、（Ｂ）に示すような縫製構造１を作製する。すなわち、シートクッション７１の表皮材７１１において、縫製構造１を有する凹状（凹面状）の縫い合わせ合流部７１２を作製する。   In this way, the sewing structure 1 as shown in FIGS. 2A and 2B is produced. That is, in the skin material 711 of the seat cushion 71, a concave (concave surface) sewing and joining portion 712 having the sewing structure 1 is produced.

次に、本実施形態の縫製構造１及びこれを備えた自動車用シートの表皮材７１１の作用効果について説明する。
本実施形態の縫製構造によれば、第１縫合部５１は、その一端５１１が第２縫合部５２の位置まで延び、かつ、第１表皮片１０の第１重合部１３及び第２表皮片２０の第２重合部２３に存在しない。すなわち、第１表皮片１０における第３表皮片３０との縫い代である第１Ｂ縫い代１２（第１重合部１３）と第２表皮片２０における第３表皮片３０との縫い代である第２Ｂ縫い代２２（第２重合部２３）とが縫い合わされないように、第１表皮片１０と第２表皮片２０とが縫い合わされている。 Next, the effect of the sewing structure 1 of this embodiment and the skin material 711 of the automobile seat provided with the same will be described.
According to the sewing structure of this embodiment, the first stitching portion 51 has one end 511 extending to the position of the second stitching portion 52, and the first overlapping portion 13 and the second skin piece 20 of the first skin piece 10. It does not exist in the second superposition part 23. That is, the first B seam allowance 22 that is the seam allowance between the first skin allowance 12 (first overlapping portion 13) that is the seam allowance with the third skin piece 30 in the first skin piece 10 and the third outer skin piece 30 in the second skin piece 20. The first skin piece 10 and the second skin piece 20 are stitched together so that the (second overlapping portion 23) is not stitched together.

そのため、本実施形態のように、第１表皮片１０、第２表皮片２０及び第３表皮片３０を互いに縫い合わせ、それらが合流する縫い合わせ合流部７１２を形成し、その縫い合わせ合流部７１２を凹状（凹面状）にした場合であっても、縫い合わせ合流部７１２のシワ発生を抑制できる。すなわち、第１表皮片１０の第１Ｂ縫い代１２（第１重合部１３）と第２表皮片２０の第２Ｂ縫い代２２（第２重合部２３）とが縫い合わされておらず、互いに開ける状態となるから、従来のような縫い代に起因する縫い合わせ合流部７１２のシワ発生を抑制できる。また、従来のように縫い代の一部を予めカットしておく等の作業も不要であり、生産性の低下を招くこともない。   Therefore, like this embodiment, the 1st skin piece 10, the 2nd skin piece 20, and the 3rd skin piece 30 are sewn together, the stitching merge part 712 where they merge is formed, and the stitching junction part 712 is concave ( Even if it is a (concave shape), wrinkle generation of the stitching joint portion 712 can be suppressed. That is, the first B seam allowance 12 (first overlapping portion 13) of the first skin piece 10 and the second B seam allowance 22 (second overlapping portion 23) of the second skin piece 20 are not stitched together, and are in a state of being opened to each other. Therefore, it is possible to suppress the occurrence of wrinkles in the stitching / merging portion 712 due to the conventional sewing allowance. Further, a work such as cutting a part of the seam allowance in advance as in the prior art is unnecessary, and the productivity is not reduced.

また、縫製構造１を有する表皮材（縫製材）７１１は、上述したように、縫い合わせ合流部７１２のシワ発生を抑制できるため、仕上がりが良好なものとなり、形状追従性を高めることができ、意匠性を向上させることができる。これにより、優れた意匠性が要求される場合がある、例えば本実施形態のような自動車用シートの表皮材への適用が有効となる。   In addition, as described above, the skin material (sewing material) 711 having the sewing structure 1 can suppress the occurrence of wrinkles in the stitching and joining portion 712, so that the finish is excellent and the shape followability can be improved. Can be improved. Thereby, the application to the skin material of the vehicle seat as in this embodiment, for example, in which an excellent design property may be required, is effective.

また、本実施形態の自動車用シート（フロントシート７０）におけるシートクッション７１の表皮材７１１は、縫製構造１を備えている。そのため、上述した縫製構造１と同様の作用効果が得られる。特に、表皮材７１１の縫い合わせ合流部７１２のシワ発生を抑制できるため、表皮材７１１の仕上がりが良好なものとなり、自動車用シートに対する表皮材７１１の形状追従性を高めることができる。また、表皮材７１１によって自動車用シートの意匠性を向上させることができる。   Further, the skin material 711 of the seat cushion 71 in the automobile seat (front seat 70) of the present embodiment includes the sewing structure 1. Therefore, the same effect as the sewing structure 1 described above can be obtained. In particular, since the occurrence of wrinkles at the stitching and joining portion 712 of the skin material 711 can be suppressed, the finish of the skin material 711 becomes favorable, and the shape followability of the skin material 711 with respect to the automobile seat can be enhanced. Further, the design of the automobile sheet can be improved by the skin material 711.

このように、本実施形態によれば、縫い代に起因する縫い合わせ合流部７１２のシワ発生を抑制でき、意匠性を向上させることができる縫製構造１及びこれを備えた自動車用シート（乗物用シート）の表皮材７１１を提供することができる。   Thus, according to the present embodiment, the sewing structure 1 that can suppress the occurrence of wrinkles in the stitching and joining portion 712 due to the seam allowance and can improve the design, and the automobile seat (vehicle seat) provided with the same. The skin material 711 can be provided.

（実施形態２）
本実施形態は、図１、図６、図７に示すように、縫製構造１を自動車用シート（フロントシート７０）におけるシートバック７２の表皮材７２１に適用した例である。なお、実施形態１と同様の構成及び作用効果については説明を省略する。 (Embodiment 2)
This embodiment is an example in which the sewing structure 1 is applied to a skin material 721 of a seat back 72 in an automobile seat (front seat 70), as shown in FIGS. In addition, description is abbreviate | omitted about the structure and effect similar to Embodiment 1. FIG.

図６（Ａ）、（Ｂ）に示すように、シートバック７２の表皮材７２１は、４枚の布状の表皮片が互いに縫い合わされ、その４枚の表皮片が１点で合流して形成された凹状（凹面状）の縫い合わせ合流部７２２を有する。縫い合わせ合流部７２２は、縫製構造１を有する。なお、図６（Ａ）は、図１のシートバック７２のＢ部分を拡大して示した図である。   As shown in FIGS. 6 (A) and 6 (B), the skin material 721 of the seat back 72 is formed by stitching four cloth-like skin pieces together and joining the four skin pieces at one point. And has a concave (concave surface) stitching and joining portion 722. The stitching and joining portion 722 has a sewing structure 1. FIG. 6A is an enlarged view of a portion B of the seat back 72 in FIG.

縫製構造１は、例えば図２を参照して、上述の実施形態１の第１表皮片１０と同様の構成の２枚の第１表皮片１０Ａ、１０Ｂと、上述の実施形態１の第２表皮片２０と同様の構成の２枚の第２表皮片２０Ａ、２０Ｂとを備えている。   For example, referring to FIG. 2, the sewing structure 1 includes two first skin pieces 10 </ b> A and 10 </ b> B having the same configuration as the first skin piece 10 of the first embodiment described above, and the second skin of the first embodiment described above. Two second skin pieces 20A and 20B having the same configuration as the piece 20 are provided.

第１表皮片１０Ａの一の端縁部と第２表皮片２０Ａの一の端縁部とがミシン等を用いて縫い糸により縫い合わされた部分には、直線状の第１縫合部５１が形成されている。第１表皮片１０Ｂの一の端縁部と第２表皮片２０Ｂの一の端縁部とがミシン等を用いて縫い糸により縫い合わされた部分には、直線状の第１縫合部５１が形成されている。２つの第１縫合部５１は繋がっていない。   A straight first stitching portion 51 is formed at a portion where one end edge portion of the first skin piece 10A and one end edge portion of the second skin piece 20A are sewn together with a sewing thread using a sewing machine or the like. ing. A straight first stitching portion 51 is formed at a portion where one end edge portion of the first skin piece 10B and one end edge portion of the second skin piece 20B are sewn together with a sewing thread using a sewing machine or the like. ing. The two first suture portions 51 are not connected.

第１表皮片１０Ａの他の端縁部と第１表皮片１０Ｂの他の端縁部とがミシン等を用いて縫い糸により縫い合わされた部分及び第２表皮片２０Ａの他の端縁部と第２表皮片２０Ｂの他の端縁部とがミシン等を用いて縫い糸により縫い合わされた部分には、直線状の第２縫合部５２が形成されている。   A portion where the other edge portion of the first skin piece 10A and the other edge portion of the first skin piece 10B are sewn together with a sewing thread using a sewing machine or the like, and the other edge portion of the second skin piece 20A and the second edge portion. A straight second stitching portion 52 is formed at a portion where the other end edge portion of the two skin pieces 20B is sewn with a sewing thread using a sewing machine or the like.

第１表皮片１０Ａと第２表皮片２０Ａとの縫い合わせ部分である一方の第１縫合部５１は、その一端５１１が第２縫合部５２の位置まで延びており、第１表皮片１０Ａの第１重合部１３及び第２表皮片２０Ａの第２重合部２３に存在しない。   One first stitched portion 51, which is a stitched portion of the first skin piece 10A and the second skin piece 20A, has one end 511 extending to the position of the second stitched portion 52, and the first skin piece 10A has a first stitch. It does not exist in the overlapping portion 13 and the second overlapping portion 23 of the second skin piece 20A.

第１表皮片１０Ｂと第２表皮片２０Ｂとの縫い合わせ部分である他方の第１縫合部５１は、その一端５１１が第２縫合部５２の位置まで延びており、第１表皮片１０Ｂの第１重合部１３及び第２表皮片２０Ｂの第２重合部２３に存在しない。   The other first stitching portion 51, which is a stitched portion of the first skin piece 10B and the second skin piece 20B, has one end 511 extending to the position of the second stitching portion 52, and the first skin piece 10B has a first portion. It does not exist in the overlapping portion 13 and the second overlapping portion 23 of the second skin piece 20B.

第１表皮片１０Ａの第１Ｂ縫い代１２と第２表皮片２０Ａの第２Ｂ縫い代２２とは、縫い合わされていない。具体的には、第１表皮片１０Ａの第１重合部１３と第２表皮片２０Ａの第２重合部２３とは、縫い合わされていない。第１縫合部５１と第２縫合部５２との合流点５０を基点として、第１Ｂ縫い代１２（第１重合部１３）と第２Ｂ縫い代２２（第２重合部２３）とが開ける状態となっている。   The first B seam allowance 12 of the first skin piece 10A and the second B seam allowance 22 of the second skin piece 20A are not stitched together. Specifically, the first overlapping portion 13 of the first skin piece 10A and the second overlapping portion 23 of the second skin piece 20A are not stitched together. The first B seam allowance 12 (first superposed part 13) and the second B seam allowance 22 (second superposed part 23) are opened from the merging point 50 of the first stitched part 51 and the second stitched part 52 as a base point. Yes.

また、第１表皮片１０Ｂの第１Ｂ縫い代１２と第２表皮片２０Ｂの第２Ｂ縫い代２２とは、縫い合わされていない。具体的には、第１表皮片１０Ｂの第１重合部１３と第２表皮片２０Ｂの第２重合部２３とは、縫い合わされていない。第１縫合部５１と第２縫合部５２との合流点５０を基点として、第１Ｂ縫い代１２（第１重合部１３）と第２Ｂ縫い代２２（第２重合部２３）とが開ける状態となっている。   Further, the first B seam allowance 12 of the first skin piece 10B and the second B seam allowance 22 of the second skin piece 20B are not stitched together. Specifically, the first overlapping portion 13 of the first skin piece 10B and the second overlapping portion 23 of the second skin piece 20B are not stitched together. The first B seam allowance 12 (first superposed part 13) and the second B seam allowance 22 (second superposed part 23) are opened from the merging point 50 of the first stitched part 51 and the second stitched part 52 as a base point. Yes.

次に、シートバック７２の表皮材７２１の製造方法について説明する。ここでは、特に、凹状（凹面状）の縫い合わせ合流部７２２の縫製構造１の作製を中心に説明する。
まず、図７（Ａ）に示すように、上述の実施形態１と同様の方法（図３、図４参照）で縫い合わせた第１表皮片１０Ａ及び第２表皮片２０Ａと、第１表皮片１０Ｂ及び第２表皮片２０Ｂとの４枚の表皮片を準備する。 Next, a method for manufacturing the skin material 721 of the seat back 72 will be described. Here, in particular, the description will be focused on the production of the sewing structure 1 of the concave (concave surface) sewing and joining portion 722.
First, as shown in FIG. 7A, a first skin piece 10A and a second skin piece 20A, and a first skin piece 10B, which are sewn together by the same method as in the first embodiment (see FIGS. 3 and 4). And four skin pieces with the 2nd skin piece 20B are prepared.

次いで、図７（Ｂ）に示すように、第１表皮片１０Ａの表面１０１と第１表皮片１０Ｂの表面１０１とが向かい合うように、また第２表皮片２０Ａの表面２０１と第２表皮片２０Ｂの表面２０１とが向かい合うように、第１表皮片１０Ａ及び第２表皮片２０Ａと、第１表皮片１０Ｂ及び第２表皮片２０Ｂとを重ね合わせる。このとき、第１表皮片１０Ａ、１０Ｂの第１Ｂ縫合位置１２１同士が合わさるように、また第２表皮片２０Ａ、２０Ｂの第２Ｂ縫合位置２２１同士が合わさるようにする。   Next, as shown in FIG. 7B, the surface 101 of the first skin piece 10A and the surface 101 of the first skin piece 10B face each other, and the surface 201 of the second skin piece 20A and the second skin piece 20B. The first skin piece 10A and the second skin piece 20A are overlapped with the first skin piece 10B and the second skin piece 20B so that the front surface 201 faces each other. At this time, the 1B stitching positions 121 of the first skin pieces 10A and 10B are matched with each other, and the 2B stitching positions 221 of the second skin pieces 20A and 20B are matched with each other.

次いで、図７（Ｃ）に示すように、第１表皮片１０Ａ、１０Ｂの第１Ｂ縫合位置１２１同士を、また第２表皮片２０Ａ、２０Ｂの第２Ｂ縫合位置２２１同士を、ミシン等を用いて縫い糸により縫い合わせる。これにより、第１表皮片１０Ａ、１０Ｂ同士及び第２表皮片２０Ａ、２０Ｂ同士が縫い合わされた部分に第２縫合部５２が形成される。第２縫合部５２は、各第１縫合部５１の一端５１１において第１縫合部５１と合流し、合流点５０が形成される。   Next, as shown in FIG. 7C, the first skin pieces 10A and 10B are connected to each other by the first B stitching positions 121, and the second skin pieces 20A and 20B are stitched from the second B stitching positions 221 to each other using a sewing machine or the like. Sew together with sewing thread. Thereby, the 2nd stitching | suture part 52 is formed in the part by which 1st skin pieces 10A and 10B and 2nd skin pieces 20A and 20B were stitched together. The second stitching portion 52 merges with the first stitching portion 51 at one end 511 of each first stitching portion 51 to form a junction 50.

その後、第１表皮片１０Ａの表面１０１と第１表皮片１０Ｂの表面１０１とが同じ方向を向くように、また第２表皮片２０Ａの表面２０１と第２表皮片２０Ｂの表面２０１とが同じ方向を向くように、第２縫合部５２を基点として第１表皮片１０Ａ及び第２表皮片２０Ａを裏返す。   Thereafter, the surface 101 of the first skin piece 10A and the surface 101 of the first skin piece 10B are directed in the same direction, and the surface 201 of the second skin piece 20A and the surface 201 of the second skin piece 20B are the same direction. The first skin piece 10 </ b> A and the second skin piece 20 </ b> A are turned upside down with the second stitching portion 52 as the base point.

以上により、図６（Ａ）、（Ｂ）に示すような縫製構造１を作製する。すなわち、シートバック７２の表皮材７２１において、縫製構造１を有する凹状（凹面状）の縫い合わせ合流部７２２を作製する。   In this way, the sewing structure 1 as shown in FIGS. 6A and 6B is produced. That is, in the skin material 721 of the seat back 72, a concave (concave surface) stitching and joining portion 722 having the sewing structure 1 is produced.

なお、本実施形態において、第１表皮片１０Ａが実施形態１の「第１表皮片１０」に、第２表皮片２０Ａが実施形態１の「第２表皮片２０」に、第１表皮片１０Ｂ及び第２表皮片２０Ｂが実施形態１の「第３表皮片３０」に相当する。また、第１表皮片１０Ｂの第１Ｂ縫い代１２及び第２表皮片２０Ｂの第１Ｂ縫い代２２が実施形態１の「第３縫い代３１」に相当する。また、第１表皮片１０Ｂの第１Ｂ縫合位置１２１及び第２表皮片２０Ｂの第２Ｂ縫合位置２２１が実施形態１の「第３縫合位置３１１」に相当する。   In the present embodiment, the first skin piece 10A is the “first skin piece 10” of the first embodiment, the second skin piece 20A is the “second skin piece 20” of the first embodiment, and the first skin piece 10B. The second skin piece 20B corresponds to the “third skin piece 30” of the first embodiment. Further, the first B seam allowance 12 of the first skin piece 10B and the first B seam allowance 22 of the second skin piece 20B correspond to the “third seam allowance 31” of the first embodiment. Further, the first B stitching position 121 of the first skin piece 10B and the second B stitching position 221 of the second skin piece 20B correspond to the “third stitching position 311” of the first embodiment.

（実施形態３）
本実施形態は、図８〜図１１に示すように、縫製構造１を他の自動車用シート（リアシート８０）の表皮材に適用した例である。なお、実施形態１と同様の構成及び作用効果については説明を省略する。 (Embodiment 3)
This embodiment is an example in which the sewing structure 1 is applied to a skin material of another automobile seat (rear seat 80), as shown in FIGS. In addition, description is abbreviate | omitted about the structure and effect similar to Embodiment 1. FIG.

図８に示すように、自動車用のリアシート８０は、左右両側にそれぞれシートクッション（図示略）、シートバック８２、ヘッドレスト（図示略）等を備えている。リアシート８０において、左右両側のシートバック８２の間には、アームレスト（図示略）を収容するアームレスト収容凹部８４が設けられている。アームレスト収容凹部８４の底面及び内壁面は、表皮材８４１により形成されている。   As shown in FIG. 8, the rear seat 80 for an automobile includes a seat cushion (not shown), a seat back 82, a headrest (not shown) and the like on both the left and right sides. In the rear seat 80, between the left and right seat backs 82, an armrest housing recess 84 for housing an armrest (not shown) is provided. The bottom surface and the inner wall surface of the armrest housing recess 84 are formed of a skin material 841.

図９（Ａ）、（Ｂ）に示すように、アームレスト収容凹部８４の表皮材８４１は、３枚の布状の表皮片（第１表皮片１０、第２表皮片２０、第３表皮片３０）が互いに縫い合わされ、その３枚の表皮片が１点で合流して形成された凹状（入隅状）の縫い合わせ合流部８４２を有する。縫い合わせ合流部８４２は、縫製構造１を有する。なお、図９（Ａ）は、図８のアームレスト収容凹部８４のＣ部分を拡大して示した図である。   As shown in FIGS. 9A and 9B, the skin material 841 of the armrest housing recess 84 is composed of three cloth-like skin pieces (first skin piece 10, second skin piece 20, and third skin piece 30. ) Are stitched together, and the three skin pieces are joined together at one point to have a concave (entrant corner) stitching and joining portion 842. The stitching / merging portion 842 has a sewing structure 1. FIG. 9A is an enlarged view of a portion C of the armrest housing recess 84 in FIG.

縫製構造１は、第１表皮片１０と第２表皮片２０と第３表皮片３０との３枚の表皮片を備えている。第１表皮片１０の表面１０１と第２表皮片２０の表面２０１とが成す角度、第１表皮片１０の表面１０１と第３表皮片３０の表面３０１とが成す角度、第２表皮片２０と第３表皮片３０とが成す角度は、共に略９０度である。   The sewing structure 1 includes three skin pieces including a first skin piece 10, a second skin piece 20, and a third skin piece 30. The angle formed by the surface 101 of the first skin piece 10 and the surface 201 of the second skin piece 20, the angle formed by the surface 101 of the first skin piece 10 and the surface 301 of the third skin piece 30, the second skin piece 20 and The angle formed by the third skin piece 30 is approximately 90 degrees.

第３表皮片３０の角部を形成する一の端縁部には、第１表皮片１０との縫い代部分である第３Ａ縫い代３１ａが形成され、他の端縁部には、第２表皮片２０との縫い代部分である第３Ｂ縫い代３１ｂが形成されている。第３表皮片３０の角部には、第３Ａ縫い代３１ａの一部と第３Ｂ縫い代３１ｂの一部とが重なり合った第３重合部３２が形成されている。   A 3A seam allowance 31a, which is a seam allowance with the first skin piece 10, is formed at one end edge part forming the corner of the third skin piece 30, and a second skin piece is provided at the other edge part. The third B seam allowance 31b, which is a seam allowance portion with 20, is formed. A third overlapping portion 32 in which a part of the third A seam allowance 31 a and a part of the third B seam allowance 31 b overlap is formed at the corner of the third skin piece 30.

第１表皮片１０の一の端縁部と第２表皮片２０の一の端縁部とがミシン等を用いて縫い糸により縫い合わされた部分には、直線状の第１縫合部５１が形成されている。第１表皮片１０の他の端縁部と第３表皮片３０の一の端縁部とがミシン等を用いて縫い糸により縫い合わされた部分には、直線状の第２縫合部５２が形成されている。第２表皮片２０の他の端縁部と第３表皮片３０の他の端縁部とがミシン等を用いて縫い糸により縫い合わされた部分には、直線状の第２縫合部５２が形成されている。第２縫合部５２は、第１縫合部５１の一端５１１（合流点５０）において、その方向が９０度変わっている。   A straight first stitched portion 51 is formed at a portion where one end edge portion of the first skin piece 10 and one end edge portion of the second skin piece 20 are sewn together by a sewing thread using a sewing machine or the like. ing. A straight second stitching portion 52 is formed at a portion where the other edge portion of the first skin piece 10 and one edge portion of the third skin piece 30 are sewn together with a sewing thread using a sewing machine or the like. ing. A straight second stitching portion 52 is formed at a portion where the other edge portion of the second skin piece 20 and the other edge portion of the third skin piece 30 are sewn together by a sewing thread using a sewing machine or the like. ing. The direction of the second stitching portion 52 is changed by 90 degrees at one end 511 (confluence 50) of the first stitching portion 51.

第１縫合部５１は、その一端５１１が第２縫合部５２の位置まで延びており、第２縫合部５２を超えないように形成されている。すなわち、第１縫合部５１は、第１表皮片１０の第１重合部１３及び第２表皮片２０の第２重合部２３に存在しない。   The first stitching portion 51 has one end 511 extending to the position of the second stitching portion 52 and is formed so as not to exceed the second stitching portion 52. That is, the first stitching portion 51 does not exist in the first overlapping portion 13 of the first skin piece 10 and the second overlapping portion 23 of the second skin piece 20.

第１表皮片１０の第１Ｂ縫い代１２と第２表皮片２０の第２Ｂ縫い代２２とは、縫い合わされていない。具体的には、第１表皮片１０の第１重合部１３と第２表皮片２０の第２重合部２３とは、縫い合わされていない。第１縫合部５１と第２縫合部５２との合流点５０を基点として、第１Ｂ縫い代１２（第１重合部１３）と第２Ｂ縫い代２２（第２重合部２３）とが開いた状態となっている。   The first B seam allowance 12 of the first skin piece 10 and the second B seam allowance 22 of the second skin piece 20 are not stitched together. Specifically, the first overlapping portion 13 of the first skin piece 10 and the second overlapping portion 23 of the second skin piece 20 are not stitched together. The first B seam allowance 12 (first superposition part 13) and the second B seam allowance 22 (second superposition part 23) are in an open state with the joining point 50 between the first stitching part 51 and the second stitching part 52 as a base point. ing.

次に、アームレスト収容凹部８４の表皮材８４１の製造方法について説明する。ここでは、特に、凹状の縫い合わせ合流部８４２の縫製構造１の作製を中心に説明する。
まず、図１０（Ａ）に示すように、上述の実施形態１と同様の方法（図３、図４参照）で縫い合わせた第１表皮片１０及び第２表皮片２０を準備する。また、第３表皮片３０を準備する。 Next, the manufacturing method of the skin material 841 of the armrest accommodation recessed part 84 is demonstrated. Here, in particular, the description will be focused on the production of the sewing structure 1 of the concave stitching and joining portion 842.
First, as shown to FIG. 10 (A), the 1st skin piece 10 and the 2nd skin piece 20 which were stitched together by the method (refer FIG. 3, FIG. 4) similar to the above-mentioned Embodiment 1 are prepared. Moreover, the 3rd skin piece 30 is prepared.

第３表皮片３０の一の端縁部には、第１表皮片１０との縫い合わせ位置である第３Ａ縫合位置３１１ａを、他の端縁部には、第２表皮片２０との縫い合わせ位置である第３Ｂ縫合位置３１１ｂをそれぞれ点線で示す。第３表皮片３０の一の端縁部において、第３Ａ縫合位置３１１ａよりも外側の領域が第３Ａ縫い代３１ａであり、他の端縁部において、第３Ｂ縫合位置３１１ｂよりも外側の領域が第３Ｂ縫い代３１ｂである。   The 3A stitching position 311a that is a sewing position with the first skin piece 10 is provided at one end edge of the third skin piece 30 and the sewing position with the second skin piece 20 is provided at the other edge. Each 3B stitching position 311b is indicated by a dotted line. A region outside the third A stitching position 311a is the third A seam allowance 31a at one end edge of the third skin piece 30, and a region outside the third B stitching position 311b is the other region at the other edge. 3B seam allowance 31b.

次いで、図１０（Ｂ）に示すように、第１表皮片１０の表面１０１と第３表皮片３０の表面３０１とが向かい合うように、第１表皮片１０及び第２表皮片２０と第３表皮片３０とを重ね合わせる。このとき、第１Ｂ縫合位置１２１と第３表皮片３０の第３Ａ縫合位置３１１ａとが合わさるように、第１表皮片１０及び第２表皮片２０と第３表皮片３０とを重ね合わせる。   Next, as shown in FIG. 10B, the first skin piece 10, the second skin piece 20, and the third skin so that the surface 101 of the first skin piece 10 and the surface 301 of the third skin piece 30 face each other. The pieces 30 are overlapped. At this time, the first skin piece 10, the second skin piece 20, and the third skin piece 30 are overlapped so that the 1B stitching position 121 and the 3A stitching position 311a of the third skin piece 30 are aligned.

次いで、図１０（Ｃ）に示すように、第１表皮片１０の第１Ｂ縫合位置１２１と第３表皮片３０の第３Ａ縫合位置３１１ａとを、ミシン等を用いて縫い糸により縫い合わせる。このとき、図中の矢印の方向に向かって、第１縫合部５１の一端５１１の位置まで縫い合わせる。これにより、第１表皮片１０と第３表皮片３０とが縫い合わされた部分に第２縫合部５２が形成される。   Next, as shown in FIG. 10C, the 1B stitching position 121 of the first skin piece 10 and the 3A stitching position 311a of the third skin piece 30 are sewn together with a sewing thread using a sewing machine or the like. At this time, stitching is performed to the position of one end 511 of the first stitching portion 51 in the direction of the arrow in the figure. Thereby, the 2nd sewing part 52 is formed in the part by which the 1st skin piece 10 and the 3rd skin piece 30 were stitched together.

次いで、図１１（Ａ）に示すように、第２表皮片２０の第２Ｂ縫合位置２２１と第３表皮片３０の第３Ｂ縫合位置３１１ｂとが合わさるように、第２表皮片２０の第２Ｂ縫い代２２と第３表皮片３０の第３Ｂ縫い代３１ｂとを重ね合わせる。   Next, as shown in FIG. 11 (A), the second B seam allowance of the second skin piece 20 so that the second B stitching position 221 of the second skin piece 20 and the third B stitching position 311b of the third skin piece 30 are aligned. 22 and the 3B seam allowance 31b of the third skin piece 30 are overlapped.

次いで、図１１（Ｂ）に示すように、第２表皮片２０の第２Ｂ縫合位置２２１と第３表皮片３０の第３Ｂ縫合位置３１１ｂとを、ミシン等を用いて縫い糸により縫い合わせる。このとき、第１縫合部５１の一端５１１の位置から図中の矢印の方向に向かって（図１０（Ｃ）の縫い合わせ方向から９０度方向転換して）縫い合わせる。これにより、第２表皮片２０と第３表皮片３０とが縫い合わされた部分にも第２縫合部５２が形成される。   Next, as shown in FIG. 11B, the second B stitching position 221 of the second skin piece 20 and the third B stitching position 311b of the third skin piece 30 are sewn together with a sewing thread using a sewing machine or the like. At this time, sewing is performed from the position of the one end 511 of the first stitching portion 51 in the direction of the arrow in the figure (by turning 90 degrees from the stitching direction in FIG. 10C). Thereby, the 2nd sewing part 52 is formed also in the part by which the 2nd skin piece 20 and the 3rd skin piece 30 were stitched together.

以上により、図９（Ａ）、（Ｂ）に示すような縫製構造１を作製する。すなわち、アームレスト収容凹部８４の表皮材８４１において、縫製構造１を有する凹状の縫い合わせ合流部８４２を作製する。   In this way, the sewing structure 1 as shown in FIGS. 9A and 9B is produced. That is, in the skin material 841 of the armrest housing recess 84, a concave stitching and joining portion 842 having the sewing structure 1 is produced.

（その他の実施形態）
なお、本発明は、上述の実施形態に何ら限定されるものではなく、本発明を逸脱しない範囲において種々の態様で実施しうることはいうまでもない。 (Other embodiments)
In addition, this invention is not limited to the above-mentioned embodiment at all, and it cannot be overemphasized that it can implement with a various aspect in the range which does not deviate from this invention.

（１）上述の実施形態では、本発明の縫製構造を自動車用シート（フロントシート、リアシート）のシートクッション、シートバック、アームレストを収容する収容凹部に適用したが、例えば、シートの他の部分（ヘッドレスト等）、他のシート、自動車のシート以外の部分等に適用してもよい。   (1) In the above-described embodiment, the sewing structure of the present invention is applied to the housing recess for housing the seat cushion, the seat back, and the armrest of the automobile seat (front seat, rear seat). Headrest, etc.), other seats, parts other than automobile seats, and the like.

（２）上述の実施形態では、本発明の縫製構造を自動車用シート（フロントシート、リアシート）の各部の表皮材に適用したが、例えば、飛行機、船、電車等の他の乗物用シートの表皮材に適用してもよい。また、乗物以外のイス、ソファー等の表皮材に適用してもよい。   (2) In the above-described embodiment, the sewing structure of the present invention is applied to the skin material of each part of the automobile seat (front seat, rear seat). For example, the skin of other vehicle seats such as airplanes, ships, trains, etc. It may be applied to the material. Moreover, you may apply to skin materials, such as a chair other than a vehicle and a sofa.

（３）上述の実施形態では、３枚又は４枚の表皮片（被縫製材）を用いて縫製構造を構成しているが、縫製構造は、少なくとも３つの被縫製材により構成されていればよく、４つ以上の被縫製材により構成してもよい。また、各被縫製材が複数のパーツで構成されていてもよい。   (3) In the above-described embodiment, the sewing structure is configured by using three or four skin pieces (sewing materials). However, if the sewing structure is configured by at least three sewing materials. Alternatively, it may be constituted by four or more sewing materials. Each sewing material may be composed of a plurality of parts.

（４）上述の実施形態では、表皮材を構成する表皮片（被縫製材）の材質がレザーであるが、被縫製材の材質はこれに限定されるものではなく、種々様々な材質を用いることができる。また、異なる材質の被縫製材を組み合わせて縫製構造を構成してもよい。また、被縫製材の厚み、形状等も、ミシン等を用いて縫い合わせることができれば、何ら限定されるものではない。   (4) In the above-described embodiment, the material of the skin piece (the material to be sewn) constituting the skin material is leather, but the material of the material to be sewn is not limited to this, and various materials are used. be able to. Moreover, you may comprise a sewing structure combining the to-be-sewn material of a different material. Further, the thickness, shape, and the like of the material to be sewn are not limited as long as the materials can be sewn using a sewing machine or the like.

（５）上述の実施形態では、第１表皮片（第１被縫製材）と第２表皮片（第２被縫製材）とが縫い合わされた第１縫合部及び第１表皮片（第１被縫製材）及び第２表皮片（第２被縫製材）と第３表皮片（第３被縫製材）とが縫い合わされた第２縫合部は、直線状に形成されているが、曲線状であってもよいし、これらの組み合わせであってもよい。また、第１縫合部と第２縫合部とが略直交するように形成されているが、第１縫合部と第２縫合部とが成す角度は何ら限定されるものではない。   (5) In the above-mentioned embodiment, the 1st skin part (1st to-be-sewn material) and the 2nd skin piece (2nd to-be-sewn material) were sewn together, and the 1st sewing part and the 1st skin piece (the 1st to-be-covered piece) Sewing material) and the second skin piece (second sewing material) and the third skin piece (third sewing material) stitched together are formed in a straight line, but in a curved shape. There may be a combination thereof. Moreover, although the 1st sewing part and the 2nd sewing part are formed so that it may cross substantially orthogonally, the angle which a 1st sewing part and a 2nd sewing part comprise is not limited at all.

（６）上述の実施形態では、縫製構造を備えた縫い合わせ合流部が凹状（凹面状）であるが、逆に凸状（凸面状）であってもよい。すなわち、凸状（凸面状）の縫い合わせ合流部に本発明の縫製構造を適用することもできる。この場合、縫い合わせ合流部の角出し（角部を所望の形状に形成すること）等を良好に行うことができ、意匠性向上等の効果も得られる。   (6) In the above-described embodiment, the stitching and merging portion provided with the sewing structure is concave (concave), but conversely may be convex (convex). That is, the sewing structure of the present invention can also be applied to convex (convex surface) stitching and joining portions. In this case, it is possible to satisfactorily perform the cornering (form the corners into a desired shape) of the stitching and joining portions, and the effect of improving the design properties can be obtained.

（７）本発明の各構成要素は概念的なものであり、上述の実施形態に限定されない。例えば、１つの構成要素が有する機能を複数の構成要素に分散させたり、複数の構成要素が有する機能を１つの構成要素に統合したりしてもよい。また、上述の実施形態の構成の少なくとも一部を同様の機能を有する公知の構成に置き換えてもよい。   (7) Each component of the present invention is conceptual and is not limited to the above-described embodiment. For example, the functions of one component may be distributed to a plurality of components, or the functions of a plurality of components may be integrated into one component. Further, at least a part of the configuration of the above-described embodiment may be replaced with a known configuration having a similar function.

１…縫製構造
１０…第１表皮片（第１被縫製材）
１１…第１Ａ縫い代
１２…第１Ｂ縫い代
１３…第１重合部
２０…第２表皮片（第２被縫製材）
２１…第２Ａ縫い代
２２…第２Ｂ縫い代
２３…第２重合部
３０…第３表皮片（第３被縫製材）
３１…第３縫い代
５１…第１縫合部
５１１…一端（第１縫合部の一端）
５２…第２縫合部 DESCRIPTION OF SYMBOLS 1 ... Sewing structure 10 ... 1st skin piece (1st material to be sewn)
DESCRIPTION OF SYMBOLS 11 ... 1A sewing allowance 12 ... 1B sewing allowance 13 ... 1st superposition | polymerization part 20 ... 2nd skin piece (2nd sewing material)
21 ... 2A sewing allowance 22 ... 2B sewing allowance 23 ... 2nd superposition part 30 ... 3rd skin piece (3rd sewing material)
31 ... 3rd seam allowance 51 ... 1st stitching part 511 ... One end (one end of the 1st stitching part)
52. Second suture part

Claims (2)

第１被縫製材と、
該第１被縫製材と縫い合わされた第２被縫製材と、
前記第１被縫製材及び前記第２被縫製材と縫い合わされた第３被縫製材と、を備え、
前記第１被縫製材は、前記第２被縫製材との縫い代である第１Ａ縫い代と、前記第３被縫製材との縫い代である第１Ｂ縫い代と、前記第１Ａ縫い代と前記第１Ｂ縫い代とが重なる第１重合部と、を有し、
前記第２被縫製材は、前記第１被縫製材との縫い代である第２Ａ縫い代と、前記第３被縫製材との縫い代である第２Ｂ縫い代と、前記第２Ａ縫い代と前記第２Ｂ縫い代とが重なる第２重合部と、を有し、
前記第３被縫製材は、前記第１被縫製材及び前記第２被縫製材との縫い代である第３縫い代を有し、
前記第１被縫製材と前記第２被縫製材とが縫い合わされた第１縫合部は、その一端が前記第１被縫製材及び前記第２被縫製材と前記第３被縫製材とが縫い合わされた第２縫合部の位置まで延び、かつ、前記第１被縫製材の前記第１重合部及び前記第２被縫製材の前記第２重合部に存在しないことを特徴とする縫製構造。 A first sewing material;
A second sewing material that is sewn together with the first sewing material;
A first sewing material and a third sewing material sewn together with the second sewing material,
The first sewing material includes a first A seam allowance that is a seam allowance with the second sewn material, a first B seam allowance that is a seam allowance with the third sewn material, the first A seam allowance, and the first B seam allowance. A first overlapping portion that overlaps,
The second sewing material includes a second A seam allowance that is a seam allowance with the first sewn material, a second B seam allowance that is a seam allowance with the third sewn material, the second A seam allowance, and the second B seam allowance. A second overlapping portion that overlaps,
The third sewing material has a third seam allowance that is a seam allowance between the first sewn material and the second sewn material,
The first stitched portion in which the first sewing material and the second sewing material are stitched together has one end sewn between the first sewing material, the second sewing material, and the third sewing material. A sewing structure that extends to the position of the combined second stitching portion and does not exist in the first overlapping portion of the first sewing material and the second overlapping portion of the second sewing material. 請求項１に記載の縫製構造を備えていることを特徴とする乗物用シートの表皮材。   A skin material for a vehicle seat, comprising the sewing structure according to claim 1.
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JP6111982B2 (en) * 2013-10-31 2017-04-12 トヨタ紡織株式会社 Vehicle seat cover
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