JP3728576B2 - Chair seat - Google Patents
Chair seat Download PDFInfo
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- JP3728576B2 JP3728576B2 JP07946798A JP7946798A JP3728576B2 JP 3728576 B2 JP3728576 B2 JP 3728576B2 JP 07946798 A JP07946798 A JP 07946798A JP 7946798 A JP7946798 A JP 7946798A JP 3728576 B2 JP3728576 B2 JP 3728576B2
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- substrate
- seat
- skin material
- string
- side wall
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Description
【０００１】
【発明の属する技術分野】
本発明は、椅子の座席に関する。
【０００２】
【従来の技術】
図５〜図７に示すように、従来の代表的な椅子の座席(11)は、脚(３)の上部に設けた基板(12)上にクッション材(４)を設け、このクッション材(４)と基板(12)とを、基板の裏面の中央部を残して表皮材(５)で覆い、かつ中央部と対向する表皮材(５)の側縁(5a)の周囲に形成された筒状の挿通部(７)に、可撓性の締付紐条(６)を挿通し、この締付紐条(６)を緊張させて、表皮材(５)の側縁(5a)を窄めることにより形成されている。
【０００３】
クッション材(４)は、基板(12)の縁を裏面側に折り曲げて形成された側壁(12a)と表皮材(５)との間にも延在し、座席の周囲に人体がぶつかったときの緩衝材としての役目をするとともに、座席の縁を円弧状にしてソフトな感じを与えている。
【０００４】
【発明が解決しようとする課題】
上記の椅子の座席(11)において、締付紐条(６)を緊張させたとき、基板(12)の前後左右におけるほぼ直線状部(12b)を覆っている表皮材(５)の直線状部(5b)は、基板(12)の裏面中央部の方へ引っ張られるようなことがない（図６参照）。しかし、基板(12)が方形状をなし、四隅の曲率半径の小さい円弧状の角部(12c)を覆っている表皮材(５)の角部(5c)は、基板(12)の裏面中央部の方へ引っ張られる（図７参照）。
【０００５】
そのため、側壁(12a)と表皮材(５)との間おけるクッション材(４)は、基板(12)の直線状部(12b)においては、押し潰されることなく、図６のようになるが、角部(12c)においては、図７に示すように、直線状部(12b)に比してより強く押し潰される。しかも、押し潰される量は、四隅とも不均一である。
【０００６】
したがって、従来の座席(11)は、角部を図５および図７の仮想線で示す所望の形状に形成することができず、実線で示す形状に変形するという問題を有している。また、クッション材(４)の弾力に抗して締付紐条(６)を緊張させるため、締付紐条(６)の緊張状態が不安定であり、表皮材(５)が基板(12)に対して位置ずれすることもあった。
特に、椅子を長期間使用すると、クッション材(４)の弾力が低下して、締付紐条(６)が緩み、体裁が悪くなるとともに、表皮材(５)が基板(12)に対してだぶついた不安定な感じを与えることがあった。
【０００７】
本発明は、上記の問題点に鑑み、締付紐条を安定した状態で緊張させることができるようにした、椅子の座席を提供することを目的としている。
【０００８】
【課題を解決するための手段】
本発明によると、上記課題は、次のようにして解決される。
(１) 脚の上部に設けた基板上にクッション材を設け、前記クッション材と前記基板とを、前記基板の裏面中央部を残して表皮材で覆い、かつ前記表皮材の周縁に形成された挿通部に可撓性の締付紐条を挿通し、該締付紐条を緊張させて、前記表皮材の周縁を窄めることによって形成した椅子の座席において、前記基板の角部の裏面に、前記締付紐条の内側面を受け止めることにより、締付紐条が基板の裏面側中央部の方へ寄ることがないようにした係止片を突設する。
【０００９】
(２) 上記(１)項において、基板の周縁に裏面側に延びる側壁を形成するとともに、該側壁と表皮材との間にクッション材を介在させ、かつ前記係止片を前記側壁の内方に対向させて設ける。
【００１０】
(３) 上記(１)項または(２)において、係止片の先端に、外方を向く外れ防止部を設ける。
【００１１】
(４) 上記(３)項において、外れ防止部の締付紐条受け面が、前記側壁の先端と基板の裏面との中間に位置している。
【００１２】
(５) 上記(１)項〜(３)項のいずれかにおいて、締付紐条が、紐または金属線である。
【００１３】
【発明の実施の形態】
以下、本発明の実施の形態を、図１〜図４に基づいて説明する。
椅子の座席(１)の基板(２)は、椅子の脚(３)の上部に設けられ、平面視方形状をなしている。基板(２)上には、スラブウレタンからなるクッション材(４)が設けられている。基板(２)とクッション材(４)は、基板(２)の裏面の中央部を残して、表皮材(５)によって覆われている。
【００１４】
その中央部と対向する表皮材(５)の周縁(5a)には、可撓性の締付紐条(６)を通すための筒状の挿通部(７)が形成されている。
なお、締付紐条(６)は針金であってもよい。
【００１５】
また、挿通部(７)は、周縁(5a)に沿って、かがり糸を螺旋状に巻回し、縫い付けて固定して形成してもよい。
【００１６】
基板(２)の全周縁を裏面側に折り曲げて垂直の側壁(2a)が形成されている。ただし、締付紐条(６)の結び目と対向する部分には、結び目を露出させる切欠（図示省略）が形成されている。
【００１７】
図３、図４に示すように、基板(２)の各角部(2b)の裏面における側壁(2a)の内方には、環状の締付紐条(６)を内側から受け止める複数の係止片(８)が、角部(2c)に沿って並べて突設されている。
【００１８】
係止片(８)の先端には、締付紐条(６)の外れ防止のために、基板(２)の外周方向を向く鉤状の外れ防止部(９)が形成され、係止片(８)は、全体的に逆Ｌ字状をなしている。
【００１９】
なお、外れ防止部(９)の上面は、基板(２)の側壁(2a)の下端より、やや上方に位置しているのがよい。
【００２０】
挿通部(７)に締付紐条(６)を通し、その紐条(６)を引っ張って緊張させると、表皮材(５)の周縁(5a)は、基板(２)の裏面側の中央部、すなわち内側方へ窄まり、表皮材(５)全体が引っ張られた状態になる。
【００２１】
引っ張られた締付紐条(６)は、挿通部(７)を介して係止片(８)に受け止められ、それ以上、基板(２)の裏面側中央部の方へ寄ることはない。しかも、紐条(６)は、外れ防止部(９)によって外れるようなことがない。
【００２２】
そのため、基板(２)の前後左右の直線状部(実際には若干湾曲させてある)(2b)を覆っている表皮材(５)の直線状部(5b)は、従来と同様に、紐条(６)によって、基板(２)の内側へ引っ張られるようなことはない。また、基板(２)の四隅の曲率半径の小さい円弧状の角部(2c)を覆っている表皮材(５)の角部(5c)は、従来と異なって、基板(２)の内側へ引っ張られるようなことがない。
【００２３】
したがって、図２、図３に示すように、基板(２)の側壁(2a)と表皮材(５)との間に介在しているクッション材(４)は、基板(２)の直線状部(2b)においても、また円弧状の角部(2c)においても、押し潰されることがない。
【００２４】
これによって、座席(１)は、所望の形状に形成される。
また、クッション材(４)の弾力に抗して締付紐条(６)を緊張させるのではなく、係止片(８)に紐条(６)を受け止めさせているので、紐条(６)の緊張状態が安定し、表皮材(５)が基板(２)に対して位置ずれすることはない。
【００２５】
特に、椅子を長期間使用して、クッション材(４)の弾力が低下するようなことがあっても、紐条(６)が緩むことがなく、着座した人に、表皮材(５)が基板(２)に対してだぶついた、不安定な感じを与えるようなことがない。
【００２６】
さらに、紐条(６)は、緊張させられたとき、外れ防止部(９)の上面に受け止められ、表皮材(５)の周縁(5a)を基板(２)の裏面に接近させて、表皮材(５)を基板(２)の側壁(2a)の先端に圧接させ、クッション材(４)が表皮材(５)と基板(２)の側壁(2a)の先端との間からはみ出ないようにする。
【００２７】
なお、以上説明した座席は、平面視方形状であるが、円形であってもよい。この場合には、係止片(８)を、円形の基板の周縁の全体に亘って、ほぼ等間隔に設ける必要がある。
【００２８】
【発明の効果】
請求項１記載の発明によると、締付紐条を緊張させたとき、基板の角部において、締付紐条が係止片に受け止められ、基板の裏面側中央部の方へ寄ることがないので、締付紐条を安定した状態に緊張させて、表皮材を確実に基板に設けることができるとともに、座席を所望の形状に形成することができる。
【００２９】
請求項２のように、基板の側壁と表皮材との間にクッション材を介在させると、座席の外周に人がぶつかっても、衝撃を和らげて不快な感じを与えることがない。
また、係止片が、基板の外側に湾曲した部分に沿って締付紐条を受け止めるため、表皮材と基板の側壁とにより、クッション材が押し潰されることがない。
【００３０】
請求項３のように、係止片の先端に、外れ防止部を形成すると、締付紐条の外れを防止することができる。
【００３１】
請求項４のように、外れ防止部の締付紐条受け面を、基板の側壁の先端と基板の裏面との中間に位置させると、締付紐条が、表皮材の周縁部を基板の裏面に接近させて、表皮材を基板の側壁の先端に密着させ、表皮材を基板に確実に取付けることができるとともに、表皮材の周縁が外部に露呈しにくくなるので、体裁がよい。
【図面の簡単な説明】
【図１】本発明の実施形態の座席の底面図である。
【図２】図１におけるII-II矢視断面図である。
【図３】図１におけるIII−III矢視断面図である。
【図４】図１における基板の角部の斜視図である。
【図５】従来の座席の底面図である。
【図６】図５におけるVI−VI矢視断面図である。
【図７】図５におけるVII−VII矢視断面図である。
【符号の説明】
(１)座席
(２)基板
(2a)側壁
(2b)直線状部
(2c)角部
(３)脚
(４)クッション材
(５)表皮材
(5a)周縁
(5b)直線状部
(5c)角部
(６)紐条
(７)挿通部
(８)係止片
(8a)先端
(９)外れ防止部
(11)座席
(12)基板
(12a)側壁
(12b)直線状部
(12c)角部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair seat.
[0002]
[Prior art]
As shown in FIGS. 5 to 7, the seat (11) of a typical representative chair is provided with a cushion material (4) on a substrate (12) provided on the upper portion of the leg (3), and this cushion material ( 4) and the substrate (12) are formed around the side edge (5a) of the skin material (5) which is covered with the skin material (5), leaving the central portion of the back surface of the substrate. Insert the flexible fastening string (6) through the cylindrical insertion part (7), tighten the fastening string (6), and attach the side edge (5a) of the skin material (5). It is formed by constricting.
[0003]
The cushion material (4) also extends between the side wall (12a) formed by bending the edge of the substrate (12) to the back side and the skin material (5), and when the human body hits around the seat In addition to serving as a cushioning material, the edges of the seat are arcuate to give a soft feel.
[0004]
[Problems to be solved by the invention]
In the seat (11) of the chair, when the tightening string (6) is tensioned, the straight shape of the skin material (5) covering the substantially straight portion (12b) in the front, rear, left and right of the substrate (12) The portion (5b) is not pulled toward the center of the back surface of the substrate (12) (see FIG. 6). However, the corner portion (5c) of the skin material (5) covering the arc-shaped corner portion (12c) having a small radius of curvature at the four corners is the center of the back surface of the substrate (12). It is pulled toward the part (see FIG. 7).
[0005]
Therefore, the cushion material (4) between the side wall (12a) and the skin material (5) is not crushed in the linear portion (12b) of the substrate (12) as shown in FIG. As shown in FIG. 7, the corner portion (12c) is crushed more strongly than the linear portion (12b). Moreover, the amount to be crushed is uneven at all four corners.
[0006]
Therefore, the conventional seat (11) has a problem that the corner portion cannot be formed into a desired shape indicated by a virtual line in FIGS. 5 and 7 and is deformed into a shape indicated by a solid line. Further, since the tightening string (6) is tensioned against the elasticity of the cushion material (4), the tightening condition of the tightening string (6) is unstable, and the skin material (5) is attached to the substrate (12 there was also less Rukoto not a position against).
In particular, when the chair is used for a long time, the elasticity of the cushion material (4) decreases, the tightening string (6) is loosened, the appearance is deteriorated, and the skin material (5) is against the substrate (12). It sometimes gave a rough and unstable feeling.
[0007]
In view of the above problems, an object of the present invention is to provide a seat for a chair that can be tightened in a stable state.
[0008]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) A cushioning material is provided on a substrate provided on the upper part of the leg, the cushioning material and the substrate are covered with a skin material leaving the back center portion of the substrate, and formed on the periphery of the skin material. In a seat of a chair formed by inserting a flexible tightening string into the insertion part and tightening the tightening string to narrow the periphery of the skin material, the back surface of the corner of the substrate In addition, a catching piece is provided so as to prevent the tightening string from approaching to the central portion on the back side of the substrate by receiving the inner surface of the tightening string.
[0009]
(2) In the above item (1), a side wall extending on the back side is formed on the peripheral edge of the substrate, a cushioning material is interposed between the side wall and the skin material, and the locking piece is disposed inside the side wall. It is provided to face.
[0010]
(3) In the above item (1) or (2), a disengagement prevention portion facing outward is provided at the tip of the locking piece.
[0011]
(4) In the above item (3), the tightening string receiving surface of the detachment preventing portion is located between the front end of the side wall and the back surface of the substrate.
[0012]
(5) In any one of the above items (1) to (3), the tightening string is a string or a metal wire.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
The board (2) of the seat (1) of the chair is provided on the upper part of the leg (3) of the chair and has a shape in plan view. A cushion material (4) made of slab urethane is provided on the substrate (2). The substrate (2) and the cushion material (4) are covered with the skin material (5), leaving the central portion of the back surface of the substrate (2).
[0014]
At the periphery (5a) of the skin material (5) facing the central portion, a cylindrical insertion portion (7) for passing a flexible fastening string (6) is formed.
The tightening string (6) may be a wire.
[0015]
Further, the insertion portion (7) may be formed by winding a threaded yarn spirally along the peripheral edge (5a), and sewing and fixing it.
[0016]
A vertical side wall (2a) is formed by bending the entire periphery of the substrate (2) to the back surface side. However, the notch (illustration omitted) which exposes a knot is formed in the part which opposes the knot of a fastening string (6).
[0017]
As shown in FIG. 3 and FIG. 4, a plurality of engagements for receiving an annular fastening string (6) from the inside are provided on the inner side of the side wall (2a) on the back surface of each corner (2b) of the substrate (2). Stop pieces (8) are juxtaposed along the corners (2c).
[0018]
At the tip of the locking piece (8), a hook-shaped detachment prevention part (9) facing the outer peripheral direction of the substrate (2) is formed to prevent the fastening string (6) from coming off. (8) has an inverted L shape as a whole.
[0019]
Note that the upper surface of the detachment preventing portion (9) is preferably positioned slightly above the lower end of the side wall (2a) of the substrate (2).
[0020]
When the tightening string (6) is passed through the insertion part (7) and the string (6) is pulled and tensioned, the peripheral edge (5a) of the skin material (5) is the center on the back side of the substrate (2). The part, that is, the inner side is narrowed, and the entire skin material (5) is pulled.
[0021]
The pulled tightening string (6) is received by the locking piece (8) through the insertion portion (7), and does not approach the central portion on the back side of the substrate (2) any more. Moreover, the string (6) is not detached by the detachment preventing part (9).
[0022]
Therefore, the straight part (5b) of the skin material (5) covering the straight part (actually slightly curved) (2b) of the front and rear, right and left of the substrate (2) is the same as the conventional one. The strip (6) is not pulled inside the substrate (2). Also, the corner (5c) of the skin material (5) covering the arc-shaped corner (2c) having a small radius of curvature at the four corners of the substrate (2) is different from the conventional one, and the inside of the substrate (2) is different. There is no such thing as being pulled.
[0023]
Therefore, as shown in FIG. 2 and FIG. 3, the cushion material (4) interposed between the side wall (2a) of the substrate (2) and the skin material (5) is a linear portion of the substrate (2). In (2b) and neither in the arcuate corner (2c), it is not crushed.
[0024]
Thereby, the seat (1) is formed in a desired shape.
In addition, the tightening string (6) is not tensioned against the elasticity of the cushion material (4), but the locking piece (8) receives the string (6). ) Is stable, and the skin material (5) is not displaced from the substrate (2).
[0025]
In particular, even if the chair is used for a long time and the elasticity of the cushioning material (4) may decrease, the string (6) does not loosen, and the seating material (5) There is no such thing as giving a loose and unstable feeling to the substrate (2).
[0026]
Further, when the string (6) is tensioned, it is received on the upper surface of the disengagement preventing portion (9), and the peripheral edge (5a) of the skin material (5) is brought close to the back surface of the substrate (2) to The material (5) is pressed against the tip of the side wall (2a) of the substrate (2) so that the cushion material (4) does not protrude between the skin material (5) and the tip of the side wall (2a) of the substrate (2). To.
[0027]
In addition, although the seat demonstrated above is a planar view shape, it may be circular. In this case, the locking pieces (8) need to be provided at almost equal intervals over the entire periphery of the circular substrate.
[0028]
【The invention's effect】
According to the first aspect of the invention, when tensed the Himojo tightening, at the corners of the substrate, Himojo tightening is found received by the locking piece, that due toward the rear surface side central portion of the substrate not because the Himojo tightening tensed in a stable state, it is possible to provide the reliable substrate surface material, it is possible to form a seat into a desired shape.
[0029]
If the cushioning material is interposed between the side wall of the substrate and the skin material as in the second aspect, even if a person hits the outer periphery of the seat, the impact is softened and an unpleasant feeling is not given.
Further, since the locking piece receives the tightening string along the portion curved outward of the substrate, the cushion material is not crushed by the skin material and the side wall of the substrate.
[0030]
If the disengagement prevention portion is formed at the tip of the locking piece as in
[0031]
When the fastening string receiving surface of the disengagement preventing portion is positioned between the front end of the side wall of the substrate and the back surface of the substrate as in
[Brief description of the drawings]
FIG. 1 is a bottom view of a seat according to an embodiment of the present invention.
2 is a cross-sectional view taken along the line II-II in FIG.
3 is a cross-sectional view taken along the line III-III in FIG.
4 is a perspective view of a corner portion of a substrate in FIG. 1. FIG.
FIG. 5 is a bottom view of a conventional seat.
6 is a cross-sectional view taken along the line VI-VI in FIG.
7 is a cross-sectional view taken along arrow VII-VII in FIG.
[Explanation of symbols]
(1) Seat
(2) Board
(2a) Side wall
(2b) Linear part
(2c) Corner
(3) Leg
(4) Cushion material
(5) Skin material
(5a) Perimeter
(5b) Linear part
(5c) Corner
(6) String
(7) Insertion section
(8) Locking piece
(8a) Tip
(9) Detachment prevention part
(11) Seat
(12) Board
(12a) Side wall
(12b) Linear part
(12c) Corner
Claims (5)
前記基板の角部の裏面に、前記締付紐条の内側面を受け止めることにより、締付紐条が基板の裏面側中央部の方へ寄ることがないようにした係止片を突設したことを特徴とする椅子の座席。A cushioning material is provided on a substrate provided on the upper part of the leg, and the cushioning material and the substrate are covered with a skin material leaving the center of the back surface of the substrate, and an insertion portion formed on the periphery of the skin material. In the seat of the chair formed by inserting a flexible tightening string, tightening the tightening string, and narrowing the periphery of the skin material,
On the back surface of the corner portion of the substrate, a locking piece is provided so as to prevent the tightening string from approaching the central portion on the back surface side of the substrate by receiving the inner surface of the tightening string. A chair seat characterized by that.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07946798A JP3728576B2 (en) | 1998-03-26 | 1998-03-26 | Chair seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07946798A JP3728576B2 (en) | 1998-03-26 | 1998-03-26 | Chair seat |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11276309A JPH11276309A (en) | 1999-10-12 |
| JP3728576B2 true JP3728576B2 (en) | 2005-12-21 |
Family
ID=13690701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07946798A Expired - Fee Related JP3728576B2 (en) | 1998-03-26 | 1998-03-26 | Chair seat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3728576B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015037421A1 (en) | 2013-09-13 | 2015-03-19 | 株式会社岡村製作所 | Chair |
| JP2015077356A (en) * | 2013-10-18 | 2015-04-23 | 株式会社岡村製作所 | Chair and manufacturing method thereof |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4524014B2 (en) * | 1999-11-09 | 2010-08-11 | 株式会社岡村製作所 | Chair seat |
| JP4512916B2 (en) * | 2004-02-24 | 2010-07-28 | 株式会社イトーキ | Chair seat |
| JP5259202B2 (en) * | 2008-01-28 | 2013-08-07 | タカノ株式会社 | Fastening structure for chair skin |
| JP2014097179A (en) * | 2012-11-14 | 2014-05-29 | Itoki Corp | Body pressure supporting member, and chair having the same |
| JP6094944B2 (en) * | 2013-05-17 | 2017-03-15 | スズキ株式会社 | Seat cushion trim mounting structure |
| GB2624192A (en) * | 2022-11-09 | 2024-05-15 | Blue Cube Gb Ltd | Chair |
-
1998
- 1998-03-26 JP JP07946798A patent/JP3728576B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015037421A1 (en) | 2013-09-13 | 2015-03-19 | 株式会社岡村製作所 | Chair |
| CN105530839A (en) * | 2013-09-13 | 2016-04-27 | 株式会社冈村制作所 | Chair |
| CN105530839B (en) * | 2013-09-13 | 2019-09-06 | 株式会社冈村制作所 | Chair |
| JP2015077356A (en) * | 2013-10-18 | 2015-04-23 | 株式会社岡村製作所 | Chair and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11276309A (en) | 1999-10-12 |
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