JPH10327970A - Chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent concentration of weight of a seated person onto a part of a support base of a chair where a leg is installed. SOLUTION: In a chair comprising a support base 3 for having a seat on it stretched between upper parts of a pair of a right and a left legs 2, plural right and left through holes 13 are provided in mutually facing recessed places 11 formed in the upper parts of both legs 2, and leg installation parts 10 formed on both the right and left side of the support base 3 are engaged in the recessed places 11. Protruded parts 12 protruded right and left from the leg installation parts 10 are engaged with the through holes 13, thereby the leg installation parts 10 are installed on the legs 2.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、上部に座を載置す
る支基を左右１対の脚の上部間に架設した椅子に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair having a support base on which a seat is mounted on an upper portion, which is installed between upper portions of a pair of left and right legs.

【０００２】[0002]

【従来の技術】従来、この種の椅子の脚と座は、ボル
ト、リベット等（以下、総称して「ボルト」と言う。）
によって、一体化されている。このような椅子は、支基
と脚が溶接によって一体化された椅子と比較して、組立
前の部品保管効率が良く、また、１対の脚を、左右別々
にしたり、１対の脚の下部同士を連設して一体化したり
して、種々の形状に変えることができるという利点を備
えている。2. Description of the Related Art Heretofore, the legs and seats of this kind of chair have bolts, rivets and the like (hereinafter collectively referred to as "bolts").
Are integrated. Such a chair has a better part storage efficiency before assembling than a chair in which a base and legs are integrated by welding, and separates a pair of legs into left and right or a pair of legs. There is an advantage that the lower portions can be continuously connected and integrated to be changed into various shapes.

【０００３】[0003]

【発明が解決しようとする課題】しかし、従来の椅子の
ボルトには、着座した人の体重が集中して加わり、大き
な剪断力が作用する。そのため、従来の椅子は、太いボ
ルトを使用しなければならないという問題がある。However, the weight of the seated person is concentrated on the bolts of the conventional chair, and a large shearing force is applied. Therefore, the conventional chair has a problem that a thick bolt must be used.

【０００４】また、体重が加わる位置と、体重を支える
脚の位置とが、着座する人の腰掛け位置によって必ずし
も一致するとは限らず、座の先端が下がる方向の回転モ
ーメントが座に加わることがある。そのため、従来の椅
子は、回転モーメントに抗して、座の先端が下がらない
ように、ボルトを強く締め込まなければならないという
問題もある。In addition, the position where the weight is applied and the position of the legs that support the weight do not always coincide with the sitting position of the person sitting on the seat, and a rotational moment in the direction in which the tip of the seat is lowered may be applied to the seat. . For this reason, the conventional chair also has a problem that the bolt must be strongly tightened so that the tip of the seat does not drop against the rotational moment.

【０００５】本発明は、従来の椅子が有する上記の問題
点に鑑み、着座した人の体重を、支基に脚を取付ける部
分において分散して受け、かつ、上記ボルトを強く締め
込むことなく、回転モーメントに抗することのできるよ
うにした椅子を提供することを目的とする。The present invention has been made in consideration of the above-described problems of a conventional chair, and receives the weight of a seated person dispersedly at a portion where a leg is attached to a support base, and without strongly tightening the bolt. It is an object of the present invention to provide a chair capable of resisting a turning moment.

【０００６】[0006]

【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） 上部に座を載置する支基を左右１対の脚の上部
間に架設した椅子において、両脚の上部に形成した互い
に対向する凹所内に左右方向を向く貫通孔を設け、前記
支基の左右両側に形成した、前記凹所とほぼ同形をなす
脚取付け部を、前記凹所に嵌合させ、かつ前記脚取付け
部に前記脚取付け部より左右方向を向いて突出した突出
部を、前記貫通孔に嵌合させることにより、前記支基に
前記脚を取付ける。According to the present invention, the above-mentioned problem is solved as follows. (1) In a chair in which a support base for mounting a seat on the upper part is installed between the upper parts of a pair of left and right legs, a through-hole extending in the left and right direction is provided in recesses formed on the upper parts of the legs and facing each other. A leg attachment portion formed on each of the left and right sides of the base and having substantially the same shape as the recess is fitted into the recess, and the leg attachment portion has a protrusion protruding in the left-right direction from the leg attachment portion. The leg is attached to the support base by fitting the leg into the through hole.

【０００７】（２）上記(１)項において、凹所を、脚の
上部の左右両側に形成する。(2) In the above item (1), recesses are formed on the left and right sides of the upper part of the leg.

【０００８】（３）上記(１)または(２)項において、凹
所と脚取付け部とを、非円形とする。(3) In the above item (1) or (2), the recess and the leg attachment portion are made non-circular.

【０００９】（４）上記(１)〜(３)項のいずれかにおい
て、貫通孔と突出部とを、複数設ける。(4) In any one of the above items (1) to (3), a plurality of through holes and protrusions are provided.

【００１０】（５）上記(１)〜(４)項のいずれかにおい
て、貫通孔の径より大寸の頭部を有し、かつ突出部に設
けた有頭ねじによって、支基に脚を取付ける。(5) In any one of the above items (1) to (4), the head has a head larger than the diameter of the through hole, and the leg is attached to the support base by a headed screw provided in the projection. Attach.

【００１１】(６) 上記(１)〜(５)項のいずれかにおい
て、凹所に、化粧カバーを装着する。(6) In any one of the above items (1) to (5), a cosmetic cover is attached to the recess.

【００１２】(７) 上記(１)〜(６)項のいずれかにおい
て、突出部の先端面が、貫通孔の外側開口縁より奥まっ
た位置となるようにする。(7) In any one of the above items (1) to (6), the distal end surface of the projecting portion is located at a position deeper than the outer opening edge of the through hole.

【００１３】[0013]

【発明の実施の形態】以下、本発明の実施の形態を、図
１〜図７に基づいて説明する。椅子(１)は、左右両側に
脚(２)と肘掛(７)（片方の脚と肘掛は図示省略）を備え
た支基(３)と、支基(３)に設けられたトーションバー
(４)と、支基(３)に直接、或いはトーションバー(４)を
介して支基(３)に設けられた座(５)と、支基(３)に前後
傾動可能に設けられ、かつ座(５)に連結された背凭れ
(６)とを備えている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. The chair (1) comprises a support (3) provided with legs (2) and armrests (7) (one leg and armrest are not shown) on both left and right sides, and a torsion bar provided on the support (3).
(4), a seat (5) provided on the support base (3) directly or via the torsion bar (4) on the support base (3), and provided on the support base (3) so as to be able to tilt back and forth, And the backrest connected to the seat (5)
(6).

【００１４】次に、脚(２)を支基(３)に取付ける部分の
構成を、図１〜図４に基づいて説明する。支基(３)の両
側部には、脚取付け部(10)（片方の脚取付け部は図示省
略）が一体的に形成されている。脚取付け部(10)の外形
は、ほぼ方形をなしている。Next, the structure of the portion for attaching the leg (2) to the support (3) will be described with reference to FIGS. Leg mounting portions (10) (one leg mounting portion is not shown) are integrally formed on both sides of the support base (3). The outer shape of the leg attachment portion (10) is substantially rectangular.

【００１５】脚取付け部(10)には、図１〜図３に示すよ
うに、脚取付け部(10)の外形に沿った突壁(21)と、先端
面(12a)が面一に揃っている３つの突出部(12)と、後述
する肘掛支持軸(９)を貫通させる肘掛支持軸受(22)とが
形成されている。突出部(12)には、左右方向を向く雌ね
じ(14)が形成されている。また、肘掛支持軸受(22)に
は、肘掛支持軸(９)が貫通する肘掛支持軸受孔(24)が形
成されている。As shown in FIGS. 1 to 3, the leg mounting portion (10) has a protruding wall (21) along the outer shape of the leg mounting portion (10) and a front end surface (12a) flush with each other. Are formed, and an armrest support bearing (22) through which an armrest support shaft (9) to be described later penetrates is formed. The protruding portion (12) is formed with a female screw (14) oriented in the left-right direction. The armrest support bearing (22) has an armrest support bearing hole (24) through which the armrest support shaft (9) passes.

【００１６】脚(２)の上部の左右両側には、凹所(11)が
形成されている。凹所(11)は、脚取付け部(10)に嵌合す
るように、脚取付け部(10)の外形とほぼ同形をなしてい
る。Recesses (11) are formed on the left and right sides of the upper part of the leg (2). The recess (11) has substantially the same shape as the outer shape of the leg attachment portion (10) so as to fit into the leg attachment portion (10).

【００１７】凹所(11)の底部(31)には、図３、図４に示
すように、突出部(12)が嵌合する３つの貫通孔(13)と、
肘掛支持軸(９)が貫通する肘掛支持軸貫通孔(32)と、後
述する化粧カバー(33)の取付け突軸(34)が圧入される３
つのカバー取付け孔(35)とが形成されている。脚(２)の
上端には、肘掛(７)に一部分が埋め込まれた側面視Ｕ字
状の脚係合金具(37)の下部を受け入れる凹部(38)が形成
されている。凹部(38)の前後方向の長さは、肘掛(７)の
前後方向への傾動を許容する長さとされている。At the bottom (31) of the recess (11), as shown in FIGS. 3 and 4, three through holes (13) into which the protrusions (12) are fitted,
An armrest support shaft through hole (32) through which the armrest support shaft (9) penetrates, and a mounting protruding shaft (34) of a decorative cover (33) described later are press-fitted.
And two cover mounting holes (35). At the upper end of the leg (2), a concave portion (38) for receiving a lower portion of a U-shaped leg engaging bracket (37) partially embedded in the armrest (7) is formed. The length of the concave portion (38) in the front-rear direction is set to a length that allows the armrest (7) to tilt in the front-rear direction.

【００１８】化粧カバー(33)は、凹所(11)を塞いで、椅
子の意匠的美感を損なわないために設けられている。化
粧カバー(33)は、凹所(11)の形状に合わせ易いように、
弾性を有する樹脂成形品であり、全体の厚さを薄くして
ある。The decorative cover (33) is provided so as to cover the recess (11) so as not to impair the aesthetic appearance of the chair. The makeup cover (33) is easy to match the shape of the recess (11),
It is a resin molded product having elasticity, and the overall thickness is reduced.

【００１９】次に、支基に、脚、肘掛、背凭れ、及び、
化粧カバーを取付ける順序を説明する。図３に示すよう
に、まず、脚(２)の凹所(11)に、支基(３)の脚取付け部
(10)を嵌合させるとともに、突出部(12)を凹所(11)の貫
通孔(13)に嵌合させ、突出部(12)の雌ねじ(14)に雄ねじ
である有頭ねじ(15)を締め込む。Next, legs, armrests, backrests, and
The order in which the decorative covers are installed will be described. As shown in FIG. 3, first, the leg attachment portion of the support base 3 is inserted into the recess 11 of the leg 2.
(10), the protrusion (12) is fitted into the through hole (13) of the recess (11), and the female screw (14) of the protrusion (12) is a male headed screw (15). ).

【００２０】有頭ねじ(15)を締め込むと、有頭ねじの頭
部(15a)の径が貫通孔(13)の径より大であることと、突
出部(12)の先端面(12a)の位置が貫通孔(13)の外側開口
縁(13a)よりやや奥まった位置となるようにしてあるこ
ととによって、有頭ねじの頭部(15a)が、凹所(11)の底
部(31)を、脚取付け部(10)の突壁(21)と肘掛支持軸受(2
2)とに押圧する。これにより、脚(２)に、支基(３)が取
付けられる。When the headed screw (15) is tightened, the diameter of the head (15a) of the headed screw is larger than the diameter of the through hole (13), and the tip surface (12a ) Is located a little deeper than the outer opening edge (13a) of the through-hole (13), so that the head (15a) of the headed screw is at the bottom of the recess (11). 31), the projection wall (21) of the leg attachment part (10) and the armrest support bearing (2).
2) and press Thereby, the support base (3) is attached to the leg (2).

【００２１】脚(２)の両側に凹所(11)が形成されている
ため、脚(２)は、右用、左用に限定されることなく、支
基(３)の両側の何れにも取付けることができる。Since the recesses (11) are formed on both sides of the leg (2), the leg (2) is not limited to the right or left side, and can be on either side of the support (3). Can be installed.

【００２２】その後、図２に示すように、肘掛(７)と一
体化された背凭れ(６)の下端(6a)に設けられた背凭れ支
持軸(８)を、側面視Ｕ字状の軸受(36)(36)に上方から挿
入した後、軸受(36)の開口部にボルト(45)によって受け
止め片(40)を取付け、背凭れ支持軸(８)が軸受(36)から
外れないようにする。Thereafter, as shown in FIG. 2, the backrest supporting shaft (8) provided at the lower end (6a) of the backrest (6) integrated with the armrest (7) is moved in a U-shape in side view. After being inserted into the bearings (36) and (36) from above, the receiving piece (40) is attached to the opening of the bearing (36) with the bolt (45), and the backrest support shaft (8) does not come off from the bearing (36). To do.

【００２３】一方、図３に示すように、脚係合金具(37)
を溝部(38)に係合させながら、肘掛(７)の下端(7a)を肘
掛支持軸受(22)(41)間の凹部(55)に落し込んだ後、肘掛
支持軸貫通孔(32)と、肘掛支持軸受孔(24)(42)とに、鍔
(43)付き肘掛支持軸(９)を貫通させ、肘掛支持軸(９)の
先端に止め輪(44)を装着する。On the other hand, as shown in FIG.
After the lower end (7a) of the armrest (7) is dropped into the recess (55) between the armrest support bearings (22) and (41) while engaging the groove with the groove (38), the armrest support shaft through hole (32) And the armrest support bearing holes (24) and (42)
The armrest support shaft (9) with (43) is passed through, and a retaining ring (44) is attached to the tip of the armrest support shaft (9).

【００２４】最後に、化粧カバー(33)を凹所(11)にはめ
込み、突軸(34)をカバー取付け孔(35)に圧入して、脚
(２)に装着する。化粧カバー(33)は、取付けられた後、
外側から押されることがあっても、突軸(34)によって凹
むようなことがない。Finally, the decorative cover (33) is fitted into the recess (11), and the protruding shaft (34) is press-fitted into the cover mounting hole (35).
Attach to (2). After the makeup cover (33) is installed,
Even if it is pushed from the outside, it will not be depressed by the protruding shaft (34).

【００２５】以上のようにして組立られた椅子(１)の脚
(２)と支基(３)は、３つの突出部(12)が貫通孔(13)に嵌
合し、かつ、脚取付け部(10)が凹所(11)に嵌合する２重
嵌合支持構造によって、互いに組み合わされている。The legs of the chair (1) assembled as described above.
(2) and the support base (3) have a double fitting in which three projecting portions (12) fit into the through holes (13) and the leg mounting portions (10) fit into the recesses (11). They are combined with each other by a joint support structure.

【００２６】そのため、椅子(１)に着座した人の体重
は、２重嵌合支持構造の各部に分散され、１箇所に集中
して加わることがない。Therefore, the weight of the person sitting on the chair (1) is dispersed to each part of the double fitting support structure, and does not concentrate on one place.

【００２７】また、人が浅く腰掛けたとき、肘掛支持軸
(９)を中心にして、座(５)の前部が下がる方向に、座
(５)と支基(３)に回転モーメントが加わるが、ほぼ台形
に形成されて互いに嵌合している凹所(11)と脚取付け部
(10)によって、回転モーメントに抗することができ、座
（５)の前下がりが防止される。When a person sits shallowly, the armrest support shaft
With the center of (9) as the center of the seat (5),
A rotational moment is applied to (5) and the support base (3), but the recesses (11), which are formed substantially in a trapezoidal shape and are fitted to each other, and the leg mounting portion
According to (10), the rotational moment can be resisted, and the seat (5) is prevented from falling forward.

【００２８】なお、背凭れ(６)は、図６に示すように、
左右１対の連結片(39)（片方は図示省略）によって、座
(５)の後部に連結されている。さらに背凭れ(６)は、背
凭れ(６)に回転可能に設けられた左右１対の押圧駒(46)
（片方は図示省略）を、トーションバー(４）の後端に
上方から接触させて、トーションバーに連結されてい
る。The backrest (6) is, as shown in FIG.
A pair of left and right connecting pieces (39) (one of which is not shown)
(5) It is connected to the rear part. Further, the backrest (6) is a pair of left and right pressing pieces (46) rotatably provided on the backrest (6).
(One of them is not shown) is connected to the torsion bar by contacting the rear end of the torsion bar (4) from above.

【００２９】着座した人は、背凭れ(６)に寄り掛かる
と、背凭れ(６)が背凭れ支持軸(８)を中心に後傾し、肘
掛(７)が肘掛支持軸(９)を中心に後傾して、背凭れ(６)
に対する寄り掛かり力と、トーションバー(４)の弾力と
の釣り合いがとれたところで、背凭れ(６)の後傾が停止
して、安楽姿勢をとることができる。When the seated person leans on the backrest (6), the backrest (6) tilts backward about the backrest support shaft (8), and the armrest (7) moves the armrest support shaft (9). Tilt back to center, backrest (6)
When the leaning force on the backrest (6) is balanced with the elasticity of the torsion bar (4), the backward leaning of the backrest (6) is stopped, and a comfortable posture can be taken.

【００３０】図７は、脚の変形例を示す。この脚(51)
は、支基(３)に取付けられる支持軸(52)が、平面視逆Ｕ
字状の着床片(53)によって一体化されている。この支持
軸(52)にも、上部両側に凹所(11)が形成されている。FIG. 7 shows a modification of the leg. This leg (51)
Means that the support shaft (52) attached to the support base (3) is
It is integrated by a letter-shaped landing piece (53). The support shaft (52) also has recesses (11) on both upper sides.

【００３１】凹所と、脚取付け部を、多角形または楕円
等とすることもある。すなわち、凹所と脚取付け部は、
非円形であればよい。The recess and the leg attachment portion may be polygonal or elliptical. That is, the recess and the leg attachment part
Any non-circular shape is acceptable.

【００３２】さらに、凹所と、脚取付け部の変形例とし
て、次の２つがある。第１に、凹所と脚取付け部とを円
形にして、突出部と貫通孔とを１つにする。この変形例
は、支基と脚との連結部分を２重嵌合支持構造にするこ
とだけを考慮したものである。第２に、凹所と脚取付け
部とを円形にして、突出部と貫通孔とを複数にする。こ
の変形例は、２重嵌合支持構造の他に、複数の突出部と
貫通孔とによって、座の回転モーメントに抗するもので
ある。Further, there are the following two modifications of the concave portion and the leg attachment portion. First, the recess and the leg attachment portion are made circular, and the projection and the through hole are made into one. This modification only considers that the connecting portion between the support base and the leg has a double fitting support structure. Second, the recess and the leg attachment portion are made circular, and the number of protrusions and through holes is increased. In this modified example, in addition to the double fitting support structure, a plurality of protrusions and through holes are used to resist the rotational moment of the seat.

【００３３】[0033]

【発明の効果】請求項１の発明では、脚の凹所に支基の
脚取付け部を嵌合するため、支基と脚との左右方向の間
に隙間が生じることなく、支基と脚とを一体化すること
ができ、見栄えのよい椅子を得ることができる。脚取付
け部が凹所に嵌合し、かつ、突出部が貫通孔に嵌合する
２重嵌合支持構造によって、着座した人の体重が、２重
嵌合支持構造の各部に分散され、１箇所に集中して加わ
るようなことがない。そのため、座に脚を取付ける部分
の構造に、太いボルトを使用する必要がない。According to the first aspect of the present invention, since the leg mounting portion of the support base is fitted into the recess of the leg, there is no gap between the support base and the leg in the left-right direction. Can be integrated, and a good looking chair can be obtained. The weight of the seated person is dispersed to each part of the double fitting support structure by the double fitting support structure in which the leg attachment portion fits in the recess and the protrusion fits in the through hole, and There is no need to concentrate on places. Therefore, it is not necessary to use a thick bolt for the structure of the portion where the leg is attached to the seat.

【００３４】請求項２の発明のように、凹所を、脚の上
部の両側に形成すると、脚を、支基の左右両側のどちら
側にも取付けることができる。When the recess is formed on both sides of the upper part of the leg as in the invention of claim 2, the leg can be attached to either of the left and right sides of the support base.

【００３５】請求項３の発明のように、凹所と脚取付け
部とを非円形にすると、座に回転モーメントが加わるよ
うなことがあっても、簡単な構造で、回転モーメントに
抗することができる。According to the third aspect of the present invention, when the concave portion and the leg attachment portion are made non-circular, even if a rotational moment is applied to the seat, the rotational moment can be prevented with a simple structure. Can be.

【００３６】請求項４の発明のように、貫通孔と突出部
とを複数形成すると、座に回転モーメントが加わるよう
なことがあっても、簡単な構造で、回転モーメントに抗
することができる。When a plurality of through holes and protrusions are formed as in the invention of claim 4, even if a rotational moment is applied to the seat, the rotational moment can be resisted with a simple structure. .

【００３７】請求項５の発明のように、貫通孔の径より
大の頭部を有し、突出部に設けられた有頭ねじによって
支基に脚を取付けると、有頭ねじの頭部によって、脚の
外れが防止される。また、有頭ねじは、突出部に締め込
まれて、突出部とで剪断力を受けるため、太くすること
なく、剪断力に抗することができる。According to a fifth aspect of the present invention, when the head has a head larger than the diameter of the through hole and the leg is attached to the support base by a headed screw provided on the projection, the head of the headed screw is , Prevents the legs from coming off. Further, since the headed screw is tightened into the protruding portion and receives a shearing force with the protruding portion, the headed screw can withstand the shearing force without being thickened.

【００３８】請求項６の発明のように、凹所に化粧カバ
ーを装着すると、支基に対する脚の凹凸のある取付け構
造を外部から覆うことができて、意匠的に優れた椅子を
得ることができ、かつ椅子を持運ぶ際に、取付け構造に
触れて怪我をするようなことがない。When the decorative cover is mounted in the recess as in the invention of claim 6, the mounting structure having the unevenness of the legs with respect to the base can be covered from the outside, and a chair excellent in design can be obtained. It is possible to prevent injury when touching the mounting structure when carrying the chair.

【００３９】請求項７の発明のように、突出部の先端面
が、貫通孔の外側開口縁より奥まった位置となるように
してくおくと、有頭ねじの締め込みが確実になり、支基
と脚とを強固に一体化することができる。If the distal end surface of the protruding portion is located at a position deeper than the outer opening edge of the through hole as in the invention of claim 7, tightening of the headed screw is ensured, and And the leg can be firmly integrated.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施形態の椅子の、支基の側部の一部
分、脚、肘掛、化粧カバーの斜視図である。FIG. 1 is a perspective view of a part of a side portion of a support base, a leg, an armrest, and a decorative cover of a chair according to an embodiment of the present invention.

【図２】椅子の背凭れ支持軸と肘掛支持軸とに沿った縦
断正面図であり、図６のII−II矢視断面図である。FIG. 2 is a longitudinal sectional front view along a backrest supporting shaft and an armrest supporting shaft of the chair, and is a sectional view taken along the line II-II of FIG. 6;

【図３】図２における、脚を支基に取付ける部分の拡大
断面図である。FIG. 3 is an enlarged sectional view of a portion where a leg is attached to a support base in FIG. 2;

【図４】脚の上部の側面図である。FIG. 4 is a side view of the upper part of the leg.

【図５】背凭れが起立した椅子の側面図である。FIG. 5 is a side view of the chair with the backrest standing upright.

【図６】椅子の、座、支基、背凭れの下部の断面側面図
である。FIG. 6 is a sectional side view of a lower portion of a seat, a support base, and a backrest of the chair.

【図７】他の実施形態の脚の斜視図である。FIG. 7 is a perspective view of a leg according to another embodiment.

【符号の説明】 (１)椅子 (２)脚 (３)支基 (４)トーションバー (５)座 (６)背凭れ (6a)背凭れの下端 (７)肘掛 (7a)肘掛の下端 (８)背凭れ支持軸 (９)肘掛支持軸 (10)脚取付け部 (11)凹所 (12)突出部 (12a)突出部の先端面 (13)貫通孔 (13a)貫通孔の外側開口縁 (14)雌ねじ (15)有頭ねじ (15a)有頭ねじの頭部 (21)突壁 (22)肘掛支持軸受 (24)肘掛支持軸受孔 (31)底部 (32)肘掛支持軸貫通孔 (33)化粧カバー (34)突軸 (35)カバー取付け孔 (36)背凭れ支持軸の軸受 (37)脚係合金具 (38)凹部 (39)連結片 (40)受け止め片 (41)肘掛支持軸受 (42)肘掛支持軸受孔 (43)鍔 (44)止め輪 (45)ボルト (46)押圧駒 (51)脚 (52)支持軸 (53)着床片 (55)肘掛支持軸受間の凹部[Description of Signs] (1) Chair (2) Leg (3) Support (4) Torsion bar (5) Seat (6) Backrest (6a) Lower end of backrest (7) Armrest (7a) Lower end of armrest ( 8) Backrest support shaft (9) Armrest support shaft (10) Leg mounting part (11) Recess (12) Projection (12a) Tip surface of projection (13) Through hole (13a) Outside opening edge of through hole (14) Female screw (15) Headed screw (15a) Head of headed screw (21) Projecting wall (22) Armrest support bearing (24) Armrest support bearing hole (31) Bottom (32) Armrest support shaft through hole ( 33) Makeup cover (34) Protruding shaft (35) Cover mounting hole (36) Bearing for backrest support shaft (37) Leg engaging bracket (38) Recess (39) Connecting piece (40) Receiving piece (41) Armrest support Bearing (42) Armrest support bearing hole (43) Flange (44) Retaining ring (45) Bolt (46) Pressing piece (51) Leg (52) Support shaft (53) Landing piece (55) Recess between armrest support bearing

Claims (7)

【特許請求の範囲】[Claims] 【請求項１】 上部に座を載置する支基を左右１対の脚
の上部間に架設した椅子において、両脚の上部に形成し
た互いに対向する凹所内に左右方向を向く貫通孔を設
け、前記支基の左右両側に形成した、前記凹所とほぼ同
形をなす脚取付け部を、前記凹所に嵌合させ、かつ前記
脚取付け部に前記脚取付け部より左右方向を向いて突出
した突出部を、前記貫通孔に嵌合させることにより、前
記支基に前記脚を取付けたことを特徴とする椅子。1. A chair in which a support base for mounting a seat on the upper portion is installed between upper portions of a pair of left and right legs, and a through-hole extending in a left-right direction is provided in recesses formed on the upper portions of the two legs and facing each other. Leg attachment portions formed on both left and right sides of the support base and having substantially the same shape as the recess are fitted into the recess, and the leg attachment portion projects from the leg attachment portion in the left-right direction. A chair wherein the leg is attached to the support base by fitting a part into the through hole. 【請求項２】 凹所を、脚の上部の左右両側に形成した
請求項１記載の椅子。2. The chair according to claim 1, wherein the recesses are formed on the left and right sides of the upper part of the leg. 【請求項３】 凹所と脚取付け部とを、非円形とした請
求項１または２記載の椅子。3. The chair according to claim 1, wherein the recess and the leg attachment portion are non-circular. 【請求項４】 貫通孔と突出部とを、複数設けた請求項
１〜３のいずれかに記載の椅子。4. The chair according to claim 1, wherein a plurality of through holes and protrusions are provided. 【請求項５】 貫通孔の径より大寸の頭部を有し、かつ
突出部に設けた有頭ねじによって、支基に脚を取付けた
請求項１〜４のいずれかに記載の椅子。5. The chair according to claim 1, wherein the chair has a head that is larger than the diameter of the through hole, and the leg is attached to the support base by a headed screw provided in the projection. 【請求項６】 凹所に、化粧カバーを装着した請求項１
〜５のいずれかに記載の椅子。6. The method according to claim 1, wherein a decorative cover is attached to the recess.
The chair according to any one of Items 1 to 5, 【請求項７】 突出部の先端面が、貫通孔の外側開口縁
より奥まった位置となるようにした請求項１〜６のいず
れかに記載の椅子。7. The chair according to claim 1, wherein a distal end surface of the protruding portion is located at a position deeper than an outer opening edge of the through hole.