JP5581780B2 - Vehicle seat cushions - Google Patents

Vehicle seat cushions Download PDF

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Publication number
JP5581780B2
JP5581780B2 JP2010086791A JP2010086791A JP5581780B2 JP 5581780 B2 JP5581780 B2 JP 5581780B2 JP 2010086791 A JP2010086791 A JP 2010086791A JP 2010086791 A JP2010086791 A JP 2010086791A JP 5581780 B2 JP5581780 B2 JP 5581780B2
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Prior art keywords
wire
wires
frame
seat cushion
extending
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JP2011218842A (en
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佑馬 川野
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Toyota Boshoku Corp
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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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
    • B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
    • B60N2/4221—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the front
    • 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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
    • B60N2/427—Seats or parts thereof displaced during a crash
    • B60N2/42709—Seats or parts thereof displaced during a crash involving residual deformation or fracture of the structure
    • B60N2/42718—Seats or parts thereof displaced during a crash involving residual deformation or fracture of the structure with anti-submarining systems

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Description

本発明は、乗物に装着される乗物シートのシートクッションに関する。   The present invention relates to a seat cushion of a vehicle seat mounted on a vehicle.

乗物シートのシートクッションは、従来矩形状のフレームと、フレームに両端部が支持される複数のワイヤと、ワイヤの上に設置されるパッドを有する（特許文献１）。ワイヤは、部分的に下方へ屈曲してワイヤの変形を許容する屈曲部を有する。そのためパッドからワイヤに荷重が加わると、屈曲部の変形によって荷重がワイヤによって吸収され得る。   A seat cushion of a vehicle seat has a conventional rectangular frame, a plurality of wires supported at both ends by the frame, and a pad installed on the wires (Patent Document 1). The wire has a bent portion that is partially bent downward to allow deformation of the wire. Therefore, when a load is applied from the pad to the wire, the load can be absorbed by the wire due to the deformation of the bent portion.

特開２００７−８９８８１号公報JP 2007-89881 A

しかし荷重をさらに効果的に吸収し得るワイヤを有するシートクッションが従来求められている。   However, there is a need for a seat cushion having a wire that can absorb the load more effectively.

前記課題を解決するために本発明は、各請求項に記載の通りの構成を備える乗物シート用シートクッションであることを特徴とする。一つの特徴によると本発明は、フレームと、フレームに両端部が支持されるワイヤと、ワイヤの上に設置されるパッドを有する。ワイヤには、両端部の間においてワイヤの延出方向に対して直交する水平方向の一方向成分、かつ上下方向成分とを有する屈曲部が設けられる。   In order to solve the above-mentioned problems, the present invention is a vehicle seat cushion having a configuration as described in each claim. According to one aspect, the present invention includes a frame, a wire supported at both ends by the frame, and a pad placed on the wire. The wire is provided with a bent portion having a unidirectional component in the horizontal direction perpendicular to the extending direction of the wire and a vertical component between both ends.

したがってパッドからワイヤに荷重が加わると、ワイヤは、屈曲部によって延出方向に対して直交する水平方向と下方向とに変形し、かつワイヤは、ワイヤ延出方向に伸びる軸を中心として捩られ得る。これによりワイヤに加わった荷重は、ワイヤの複数方向の変形のみならず捩りによっても吸収され得る。そのためワイヤによって荷重が効果的に吸収され、例えばワイヤとフレームの取付箇所において荷重が集中すること等を避けることができる。   Therefore, when a load is applied to the wire from the pad, the wire is deformed by the bent portion into a horizontal direction and a downward direction perpendicular to the extending direction, and the wire is twisted about an axis extending in the wire extending direction. obtain. Thereby, the load applied to the wire can be absorbed not only by deformation of the wire in a plurality of directions but also by twisting. Therefore, the load is effectively absorbed by the wire, and for example, it is possible to avoid the concentration of the load at the place where the wire and the frame are attached.

乗物シートの斜視図である。It is a perspective view of a vehicle seat. シートクッションの一部断面とワイヤの左側面図である。It is a partial cross section of a seat cushion and a left side view of a wire. シートクッションの上面図である。It is a top view of a seat cushion.

本発明の一つの実施の形態を図１〜３にしたがって説明する。図１に示すように乗物シート１０は、自動車等の乗物の床面に装着されるシートであって、シートクッション１とシートバック１１を有する。シートバック１１は、シートクッション１の後部に角度調整可能に取付けられる。   One embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a vehicle seat 10 is a seat that is mounted on a floor surface of a vehicle such as an automobile, and includes a seat cushion 1 and a seat back 11. The seat back 11 is attached to the rear part of the seat cushion 1 so that the angle can be adjusted.

シートクッション１は、図１に示すようにフレーム２と複数のワイヤ３〜５とパッド６を有する。フレーム２は、シートクッション１の左右縁に沿って前後方向に延出する一対のサイドフレーム２ａと、サイドフレーム２ａの下側にて前後方向に延出する一対のベースフレーム２ｇを有する。一対のサイドフレーム２ａの前部には、これらを連結する板状の前フレーム２ｂが取付けられる。   As shown in FIG. 1, the seat cushion 1 includes a frame 2, a plurality of wires 3 to 5, and a pad 6. The frame 2 has a pair of side frames 2a extending in the front-rear direction along the left and right edges of the seat cushion 1, and a pair of base frames 2g extending in the front-rear direction below the side frame 2a. A plate-like front frame 2b that connects them is attached to the front portions of the pair of side frames 2a.

一対のサイドフレーム２ａの後部には、図１に示すようにこれらを連結するパイプ状の後フレーム２ｃが取付けられる。各サイドフレーム２ａの前後端部と各ベースフレーム２ｇの前後端部は、レッグ２ｄ〜２ｆによって連結される。ベースフレーム２ｇの下側には、スライド装置８が設けられる。スライド装置８は、床面に取付けられるアンダレール８ａと、アンダレール８ａにスライド可能に取付けられるアッパレール８ｂを有する。アッパレール８ｂの上にベースフレーム２ｇが取付けられる。   As shown in FIG. 1, a pipe-like rear frame 2c is attached to the rear portions of the pair of side frames 2a. The front and rear end portions of each side frame 2a and the front and rear end portions of each base frame 2g are connected by legs 2d to 2f. A slide device 8 is provided below the base frame 2g. The slide device 8 includes an under rail 8a that is attached to the floor surface, and an upper rail 8b that is slidably attached to the under rail 8a. A base frame 2g is mounted on the upper rail 8b.

ワイヤ３〜５は、図２，３に示すように金属製の長尺状部材であって、例えば丸棒である。ワイヤ３は、前後方向に延出して、前端部３ａと後端部３ｂを有する。前端部３ａは、前後方向に略水平に延出して、前フレーム２ｂの上面に溶接される。後端部３ｂは、前端部３ａよりも下方向でかつ左右方向にずれた位置において前後方向に略水平に延出して、支持ワイヤ５に溶接される。   The wires 3 to 5 are long metal members as shown in FIGS. 2 and 3, for example, round bars. The wire 3 extends in the front-rear direction and has a front end portion 3a and a rear end portion 3b. The front end 3a extends substantially horizontally in the front-rear direction and is welded to the upper surface of the front frame 2b. The rear end portion 3 b extends substantially horizontally in the front-rear direction at a position that is lower than the front end portion 3 a and shifted in the left-right direction, and is welded to the support wire 5.

ワイヤ３は、図２，３に示すように前端部３ａと後端部３ｂの間に屈曲部３ｃと傾斜部３ｄと水平部３ｅを有する。屈曲部３ｃは、ワイヤ３を変形許容するためにワイヤ３を部分的に屈曲させた形状を有する。屈曲部３ｃは、前フレーム２ｂの近傍に位置し、第一部３ｃ１と折返し部３ｃ３と第二部３ｃ２を有する。   As shown in FIGS. 2 and 3, the wire 3 has a bent portion 3c, an inclined portion 3d, and a horizontal portion 3e between the front end portion 3a and the rear end portion 3b. The bent portion 3c has a shape in which the wire 3 is partially bent in order to allow the wire 3 to be deformed. The bent part 3c is located in the vicinity of the front frame 2b, and has a first part 3c1, a folded part 3c3, and a second part 3c2.

第一部３ｃ１は、図２，３に示すように前端部３ａから左右方向の一方向（例えば左方向）と下方向と後方向とに略直線的に延出する。折返し部３ｃ３は、第一部３ｃ１の端部から上方へ折返す。第二部３ｃ２は、折返し部３ｃ３から第一部３ｃ１と同じ左右方向の一方向と上方向と後方向とに略直線的に延出する。したがって屈曲部３ｃは、左右方向の一方向に延出するとともに、ワイヤ３を部分的に下方向に窪ませる。   As shown in FIGS. 2 and 3, the first part 3c1 extends substantially linearly from the front end portion 3a in one direction in the left-right direction (for example, the left direction), downward, and rearward. The folded portion 3c3 is folded upward from the end of the first part 3c1. The second part 3c2 extends substantially linearly from the folded part 3c3 in the same left-right direction as the first part 3c1, in the upward direction, and in the backward direction. Therefore, the bent portion 3c extends in one direction in the left-right direction and partially dents the wire 3 downward.

傾斜部３ｄは、図２，３に示すように屈曲部３ｃの後端部から下方向にかつ後方向に略直線的に延出する。水平部３ｅは、傾斜部３ｄの後端部から後方向へ略水平に直線的に延出する。一対のワイヤ３は、左右方向に所定距離の間隔にて平行に設置される。一対のワイヤ３は同じ形状であって、一対の屈曲部３ｃが同じ方向に延出する。   As shown in FIGS. 2 and 3, the inclined portion 3d extends substantially linearly downward and rearward from the rear end portion of the bent portion 3c. The horizontal portion 3e extends linearly substantially horizontally from the rear end portion of the inclined portion 3d in the rearward direction. The pair of wires 3 are installed in parallel at a predetermined distance in the left-right direction. The pair of wires 3 have the same shape, and the pair of bent portions 3c extend in the same direction.

一対のワイヤ３の間には、図２，３に示すように連結ワイヤ４と支持ワイヤ５が取付けられる。連結ワイヤ４は、左右方向に略水平に延出して、各ワイヤ３の傾斜部３ｄの上面に溶接される。これにより連結ワイヤ４は、一対のワイヤ３の中間部を連結する。   A connecting wire 4 and a support wire 5 are attached between the pair of wires 3 as shown in FIGS. The connecting wire 4 extends substantially horizontally in the left-right direction and is welded to the upper surface of the inclined portion 3 d of each wire 3. As a result, the connecting wire 4 connects the intermediate portions of the pair of wires 3.

支持ワイヤ５は、図１，３に示すように左右方向に延出し、フレーム２に溶接される一対の取付端部５ａを有する。取付端部５ａは、サイドフレーム２ａに沿って前後方向に延出し、サイドフレーム２ａの上面に溶接される。支持ワイヤ５は、一対の取付端部５ａの間に一対の左右水平部５ｂと一対の上下延出部５ｃと中央水平部５ｄを有する。左右水平部５ｂは、取付端部５ａの後部から左右方向にかつ略水平方向に直線的に延出する。上下延出部５ｃは、左右水平部５ｂの端部から下方向に直線的に延出する。中央水平部５ｄは、一対の上下延出部５ｃの下部間を左右方向に略水平に直線的に延出する。中央水平部５ｄの上面にワイヤ３の後端部３ｂが溶接される。   As shown in FIGS. 1 and 3, the support wire 5 has a pair of attachment end portions 5 a that extend in the left-right direction and are welded to the frame 2. The attachment end 5a extends in the front-rear direction along the side frame 2a and is welded to the upper surface of the side frame 2a. The support wire 5 has a pair of left and right horizontal portions 5b, a pair of vertical extending portions 5c, and a central horizontal portion 5d between a pair of attachment end portions 5a. The left and right horizontal portion 5b extends linearly from the rear portion of the attachment end portion 5a in the left-right direction and substantially in the horizontal direction. The vertically extending portion 5c extends linearly downward from the end of the left and right horizontal portion 5b. The central horizontal portion 5d linearly extends substantially horizontally in the left-right direction between the lower portions of the pair of upper and lower extension portions 5c. The rear end portion 3b of the wire 3 is welded to the upper surface of the central horizontal portion 5d.

図１，２に示すようにパッド６は、ワイヤ３〜５と前フレーム２ｂの上に設置され、ワイヤ３〜５によって支持される。パッド６は、弾性変形しやすい材料、例えばウレタンなどの発砲樹脂材料から形成される。パッド６の表面には表皮７が装着される。   As shown in FIGS. 1 and 2, the pad 6 is installed on the wires 3 to 5 and the front frame 2 b and is supported by the wires 3 to 5. The pad 6 is made of a material that is easily elastically deformed, for example, a foamed resin material such as urethane. An epidermis 7 is attached to the surface of the pad 6.

以上のようにシートクッション１は、図３に示すようにフレーム２と、フレーム２に両端部が支持されるワイヤ３と、ワイヤ３の上に設置されるパッド６を有する。ワイヤ３には、両端部の間においてワイヤ３の延出方向に対して直交する水平方向の一方向成分、かつ上下方向成分とを有する屈曲部３ｃが設けられる。   As described above, the seat cushion 1 includes the frame 2, the wire 3 whose both ends are supported by the frame 2, and the pad 6 installed on the wire 3 as shown in FIG. 3. The wire 3 is provided with a bent portion 3c having a unidirectional component in the horizontal direction perpendicular to the extending direction of the wire 3 and a vertical component between both ends.

したがってパッド６からワイヤ３に荷重が加わると、ワイヤ３は、屈曲部３ｃによって延出方向に対して直交する水平方向と下方向とに変形し、かつワイヤ３は、ワイヤ延出方向に伸びる軸を中心として捩られ得る。これによりワイヤ３に加わった荷重は、ワイヤ３の複数方向の変形のみならず捩りによっても吸収され得る。そのためワイヤ３によって荷重が効果的に吸収され、例えばワイヤ３とフレーム２の取付箇所において荷重が集中すること等を避けることができる。   Therefore, when a load is applied from the pad 6 to the wire 3, the wire 3 is deformed by the bent portion 3c into a horizontal direction and a downward direction orthogonal to the extending direction, and the wire 3 is an axis extending in the wire extending direction. Can be twisted around. Thereby, the load applied to the wire 3 can be absorbed not only by deformation of the wire 3 in a plurality of directions but also by twisting. Therefore, the load is effectively absorbed by the wire 3, and for example, it is possible to avoid the concentration of the load at the attachment location of the wire 3 and the frame 2.

図３に示すようにシートクッション１は、ワイヤ３を複数有する。複数のワイヤ３は、平行に延出し、かつ各ワイヤ３に形成された屈曲部３ｃが同方向に屈曲する。複数のワイヤ３の各中間部が連結ワイヤ４によって連結される。したがって荷重がパッド６からワイヤ３に加わると、連結ワイヤ４によって複数のワイヤ３に荷重が分散され得る。例えば使用者がシートクッション１の中心に座っていない場合等であっても、複数のワイヤ３に荷重が分散され得る。また複数のワイヤ３は、同方向に屈曲する屈曲部３ｃを有する。そのため複数のワイヤ３は、同方向に変形しかつ捩られ得る。これにより荷重が複数のワイヤ３によって協働して吸収され得る。   As shown in FIG. 3, the seat cushion 1 has a plurality of wires 3. The plurality of wires 3 extend in parallel, and a bent portion 3c formed on each wire 3 is bent in the same direction. Each intermediate portion of the plurality of wires 3 is connected by a connecting wire 4. Therefore, when a load is applied from the pad 6 to the wire 3, the load can be distributed to the plurality of wires 3 by the connecting wire 4. For example, even when the user is not sitting at the center of the seat cushion 1, the load can be distributed to the plurality of wires 3. The plurality of wires 3 have a bent portion 3c that bends in the same direction. Therefore, the plurality of wires 3 can be deformed and twisted in the same direction. Thereby, the load can be absorbed by the plurality of wires 3 in cooperation.

（他の実施の形態）
本発明は、上記実施の形態に限定されず、以下の形態等であっても良い。例えば、図１，３に示すシートクッション１は、前後方向に延出する二本のワイヤ３を有する。しかしシートクッションが前後方向に延出する三本以上のワイヤを有していても良い。図１，３に示すシートクッション１は、前後方向に延出する複数のワイヤ３を連結する連結ワイヤ４を有する。しかし連結ワイヤ４を有していなくても良い。 (Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form. For example, the seat cushion 1 shown in FIGS. 1 and 3 has two wires 3 extending in the front-rear direction. However, the seat cushion may have three or more wires extending in the front-rear direction. The seat cushion 1 shown in FIGS. 1 and 3 has a connecting wire 4 that connects a plurality of wires 3 extending in the front-rear direction. However, the connecting wire 4 may not be provided.

図３に示す二本のワイヤ３は、同じ形状である。しかし同じ形状でなくても良く、例えば複数のワイヤが異なる位置に屈曲部を有していても良い。あるいは各ワイヤが異なる方向（左右方向が逆方向、水平方向が逆方向）に延出する屈曲部を有していても良い。異なる方向に延出する屈曲部を有する場合は、二つのワイヤが逆方向に変形しやすいように二つのワイヤに連結ワイヤが設けられないことが好ましい。   The two wires 3 shown in FIG. 3 have the same shape. However, it does not have to be the same shape. For example, a plurality of wires may have bent portions at different positions. Alternatively, each wire may have a bent portion extending in a different direction (the left-right direction is the reverse direction and the horizontal direction is the reverse direction). In the case of having bent portions extending in different directions, it is preferable that the connecting wires are not provided on the two wires so that the two wires are easily deformed in the opposite directions.

図１に示すワイヤ３は、シートクッション１の前後方向に延出している。しかしワイヤがシートクッションの幅方向（左右方向）に延出し、両端部がシートクッションに支持されても良い。図３に示すワイヤ３の一端部は、支持ワイヤ５を介してフレーム２に取付けられる。しかしワイヤの一端部（後端部）が支持ワイヤを介すことなく、フレームに直接取付けられても良い。乗物は、自動車、バスなどの車両でも良いが、船舶や航空機などであっても良い。   A wire 3 shown in FIG. 1 extends in the front-rear direction of the seat cushion 1. However, the wire may extend in the width direction (left-right direction) of the seat cushion, and both ends may be supported by the seat cushion. One end of the wire 3 shown in FIG. 3 is attached to the frame 2 via a support wire 5. However, one end (rear end) of the wire may be directly attached to the frame without the support wire. The vehicle may be a vehicle such as an automobile or a bus, but may be a ship or an aircraft.

１…シートクッション
２…フレーム
３…ワイヤ
３ａ…前端部
３ｂ…後端部
３ｃ…屈曲部
４…連結ワイヤ
５…支持ワイヤ
６…パッド
１０…乗物シート
DESCRIPTION OF SYMBOLS 1 ... Seat cushion 2 ... Frame 3 ... Wire 3a ... Front end part 3b ... Rear end part 3c ... Bending part 4 ... Connection wire 5 ... Support wire 6 ... Pad 10 ... Vehicle seat

Claims (1)

乗物シート用シートクッションであって、
フレームと、前記フレームに両端部が支持されるワイヤと、前記ワイヤの上に設置されるパッドを有し、
前記ワイヤには、前記両端部の間において前記ワイヤの延出方向に対して直交する水平方向の一方向成分、かつ上下方向成分とを有する屈曲部が設けられ、
前記ワイヤを複数有し、
前記複数のワイヤは、平行に延出し、かつ前記各ワイヤに形成された前記屈曲部が同方向に屈曲し、前記複数のワイヤの各中間部が連結ワイヤによって連結される乗物シート用シートクッション。

A vehicle seat cushion,
A frame, a wire supported at both ends by the frame, and a pad installed on the wire;
The wire is provided with a bent portion having a unidirectional component in the horizontal direction perpendicular to the extending direction of the wire between the both end portions, and a vertical component ,
A plurality of the wires;
Wherein the plurality of wires, parallel extending, and wherein the bend formed on the wires to bend in the same direction, said plurality of vehicle seat seat cushion that will be connected by the intermediate portion connecting the wires of the wire.

JP2010086791A 2010-04-05 2010-04-05 Vehicle seat cushions Expired - Fee Related JP5581780B2 (en)

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JP2014151771A (en) * 2013-02-08 2014-08-25 Toyota Motor Corp Seat structure
JP6070267B2 (en) * 2013-02-27 2017-02-01 トヨタ紡織株式会社 Vehicle seat

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JP2005152482A (en) * 2003-11-28 2005-06-16 Bizen Hatsujo Kk Wire coupling structure, wire coupling structure body and cushion holder
JP2007089881A (en) * 2005-09-29 2007-04-12 Toyota Motor Corp Seat cushion structure
JP4976744B2 (en) * 2006-05-26 2012-07-18 恒雄 福井 Shock absorber for vehicle seat
JP5435764B2 (en) * 2008-01-22 2014-03-05 備前発条株式会社 Method of manufacturing wire spring in cushion spring and cushion spring manufactured by the method

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