JPH0614822A - Chair - Google Patents
ChairInfo
- Publication number
- JPH0614822A JPH0614822A JP35712391A JP35712391A JPH0614822A JP H0614822 A JPH0614822 A JP H0614822A JP 35712391 A JP35712391 A JP 35712391A JP 35712391 A JP35712391 A JP 35712391A JP H0614822 A JPH0614822 A JP H0614822A
- Authority
- JP
- Japan
- Prior art keywords
- peripheral surface
- pedestal
- mounting hole
- hole
- leg pillar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、座を支える脚柱を脚羽
根を有したベースにテーパ嵌合させた椅子に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair in which a pedestal supporting a seat is taper-fitted to a base having leg wings.
【０００２】[0002]
【従来の技術】従来、この種の椅子としては、ボス部及
びこのボス部の外周に放射状に突設した複数本の脚羽根
を備えたベースを合成樹脂で一体形成し、座を支える脚
柱の下端部をボス部に設けた取付孔にテーパ嵌合させた
ものが知られている。2. Description of the Related Art Conventionally, as a chair of this type, a pedestal supporting a seat by integrally forming a base having a boss and a plurality of leg blades protruding radially around the boss with a synthetic resin. It is known that the lower end of the taper is fitted into a mounting hole provided in the boss.
【０００３】しかしながら、このような構成のもので
は、座に腰をかけると、その荷重が脚柱の下端部の外周
面からボス部の上開きの内周面に伝達され、くさび作用
により大きく増幅された状態で、取付孔を拡開させる方
向へ作用する。しかして、大きな力が作用しつづけて、
一旦、取付孔が開いてしまうと、合成樹脂特有の塑性変
形を起こして元の位置に復帰し得なくなる。そして、着
座する毎にこのような塑性変形が繰り返されると、取付
孔が徐々に拡開されて脚柱が初期の保持位置から次第に
沈下していくことになる。However, in such a structure, when the user sits down on the seat, the load is transmitted from the outer peripheral surface of the lower end of the pedestal to the inner peripheral surface of the upper opening of the boss, and is greatly amplified by the wedge action. In this state, it acts in the direction of expanding the mounting hole. Then, a great force continues to act,
Once the mounting hole is opened, plastic deformation peculiar to the synthetic resin is caused, and the original position cannot be restored. Then, when such plastic deformation is repeated every time the vehicle is seated, the mounting hole is gradually expanded and the pedestal is gradually sunk from the initial holding position.
【０００４】このような不具合を防止するために、特開
平２ー８８００９号に開示される技術が提案されてい
る。この技術は、前記ベースの取付孔の内周面と、脚柱
の下端部の外周面との間を接着剤または両面接着テープ
を介在させて前記ベースの取付孔に脚柱の下端部を固着
するようにするか、あるいは取付孔の下端部に係止段部
を設け、取付孔に嵌合される脚柱の下向端面を係止段部
に当接させるようにしたものである。In order to prevent such a problem, a technique disclosed in Japanese Patent Laid-Open No. 2-88009 has been proposed. In this technique, an adhesive or a double-sided adhesive tape is interposed between the inner peripheral surface of the mounting hole of the base and the outer peripheral surface of the lower end of the pedestal to fix the lower end of the pedestal to the mounting hole of the base. Alternatively, the locking step is provided at the lower end of the mounting hole, and the downward end surface of the pedestal fitted in the mounting hole is brought into contact with the locking step.
【０００５】この両技術によれば、確かに脚柱の取付孔
からの沈下を防止することができるが、前者の技術であ
れば、取付孔に脚柱を嵌合する前に接着剤または両面接
着テープを予め塗布または接着しておかなければならな
い。しかし取付孔の内径とこれにテーパ嵌合される脚柱
の外径とは精密に適嵌合するように両者殆ど同径に形成
されているため、両者間に接着剤や両面接着テープを介
在させる余裕はなく、もしこれらを介在させた状態で脚
柱を取付孔に無理に嵌合させれば、くさび作用を発揮す
る程度にテーパ嵌合することができず、両者間にがたつ
きが発生して短期間に接着面が剥離する虞れがある。According to these two techniques, it is possible to surely prevent sinking of the pedestal from the mounting hole. However, in the former technique, an adhesive or double-sided adhesive is used before the pedestal is fitted into the mounting hole. The adhesive tape must be applied or glued beforehand. However, since the inner diameter of the mounting hole and the outer diameter of the pedestal that is taper-fitted to this are formed to have almost the same diameter so that they can be fitted accurately and accurately, an adhesive or double-sided adhesive tape is interposed between them. If you do not force the fitting of the pedestal into the mounting hole with these intervening, it is not possible to taper-fit the pedestal to the extent that it exerts a wedge action, and there is rattling between the two. It may occur and the adhesive surface may peel off in a short time.
【０００６】また後者の技術であれば、取付孔に嵌合さ
れる脚柱の下向端面を取付孔の下端部に設けた係止段部
に当接させるようになっているため、脚柱は係止段部に
当接して確実に取付孔からの沈下を防止することができ
るが、前述のように取付孔の内径とこれに嵌合される脚
柱の外径は殆ど同径に形成されているとしても、四季や
環境の変化によって合成樹脂製のボス部と金属製の脚柱
との間に微妙に異なる熱膨張を生起し、これがためにボ
ス部の取付孔にテーパ嵌合される脚柱の嵌合深さが変化
することになる。このようなことを配慮して従来技術で
は、取付孔を上下に貫通状態に形成して、これに脚柱を
その下端部が取付孔から抜け出て開放されるように嵌合
し、これによって前述の微妙な熱膨張による嵌合深さの
変化を吸収するようにしていたのであるが、上述の技術
であれば、脚柱の下向端面が係止段部に当接するように
なっているため、前述の微妙な熱膨張による嵌合深さが
変化した場合、具体的には金属製の脚柱とこれと熱膨張
率の異なる合成樹脂製のボス部の取付孔との間に前者の
外径に比べて後者の内径が若干大きく変化した場合に
は、取付孔に対する脚柱の嵌合深さは深くなるが、ある
いは取付孔の内径と脚柱の外径との間に若干の製作誤差
をあり、脚柱の嵌合深さが微妙に変化した場合には、こ
の従来技術であれば、前述のように脚柱の下向端面が係
止段部に当接してそれ以上に脚柱が取付孔に深く嵌合す
ることができないため、脚柱と取付孔との間に微小なク
リアランスが発生し、これが原因で使用時に脚柱が取付
孔から容易に抜け出て、脚柱に内蔵しているガススプリ
ングを破損する虞れがある。In the latter technique, the downward end face of the pedestal fitted in the mounting hole is brought into contact with the locking step portion provided at the lower end of the mounting hole. Can contact the locking step and prevent sinking from the mounting hole reliably, but as mentioned above, the inner diameter of the mounting hole and the outer diameter of the pedestal fitted into this are formed to be almost the same diameter. However, depending on the seasons and changes in the environment, a slightly different thermal expansion occurs between the synthetic resin boss and the metal pedestal, and this causes a taper fit in the mounting hole of the boss. The fitting depth of the pedestal will change. In consideration of such a situation, in the prior art, the mounting hole is formed in a vertically penetrating state, and the pedestal is fitted into this so that the lower end portion of the pedestal is pulled out of the mounting hole and opened. Although it was designed to absorb the change in the fitting depth due to the subtle thermal expansion of, the above-mentioned technology makes the downward end face of the pedestal contact the locking step. When the fitting depth due to the above-mentioned subtle thermal expansion changes, specifically, the former outer case is placed between the metal pedestal and the mounting hole of the synthetic resin boss with a different thermal expansion coefficient. If the inner diameter of the latter changes slightly compared with the diameter, the fitting depth of the pedestal with respect to the mounting hole will be deeper, or there will be some manufacturing error between the inner diameter of the mounting hole and the outer diameter of the pedestal. If there is a slight change in the fitting depth of the pedestal, with this conventional technology, Since the downward end surface of the pedestal comes into contact with the locking step and the pedestal cannot fit deeper into the mounting hole, a minute clearance is generated between the pedestal and the mounting hole. The pedestal may easily come out of the mounting hole during use, and the gas spring built in the pedestal may be damaged.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、このような
従来技術の課題を一挙に解消することを目的としてい
る。SUMMARY OF THE INVENTION It is an object of the present invention to solve all the problems of the prior art.
【０００８】[0008]
【課題を解決するための手段】本発明に係る椅子は、以
上のような目的を達成するために、実施例に示す参照符
号を付して示せば、内周面７ａにテーパを付与した取付
孔７を備えたボス部１及びこのボス部１の外周に放射状
に突設した複数本の脚羽根２を合成樹脂により一体に成
形してなるベース３と、下端部の外周面４２ｂにテーパ
を付与してなりその下端部４２ｃを前記ベース３の取付
孔７にテーパ嵌合させた脚柱４とを具備してなる椅子に
おいて、前記取付孔７の下端部７ｂに、該取付孔７の内
周面７ａのテーパ角度より若干大なるテーパ角度の内周
面８ａを有する貫通孔８を連設してなることを特徴とす
る構成を採用したものである。In order to achieve the above-mentioned objects, the chair according to the present invention is mounted with a taper on the inner peripheral surface 7a, as shown by the reference numerals shown in the embodiments. A base 3 formed by integrally molding a boss portion 1 provided with a hole 7 and a plurality of leg blades 2 radially protruding on the outer periphery of the boss portion 1 with a synthetic resin, and a taper on the outer peripheral surface 42b of the lower end portion. In a chair provided with a pedestal 4 in which the lower end portion 42c of the attached end portion 42c is taper-fitted into the attachment hole 7 of the base 3, a lower end portion 7b of the attachment hole 7 is The configuration is characterized in that the through hole 8 having the inner peripheral surface 8a having a taper angle slightly larger than the taper angle of the peripheral surface 7a is continuously provided.
【０００９】[0009]
【作用】座５に作用する下向きの荷重がテーパ嵌合部分
におけるくさび作用によりベース３の取付孔７を拡径さ
せる方向の大きな力に変換されるため、テーパ面をなす
脚柱４の外周面４２ｂと、取付孔７の内周面７ａとの間
に面滑りが発生することが不可欠である。しかして、本
発明によれば、前記取付孔７の下端部７ｂに、該取付孔
７の内周面７ａのテーパ角度より若干大なるテーパ角度
の内周面８ａを有する貫通孔８を連設してなるため、取
付孔８に嵌合された脚柱４は、取付孔７の内周面７ａの
テーパ角度、即ちこれと同じテーパ角度の外周面４２ｂ
を有する脚柱４の下端部周縁４２ｄ（図２）が、このテ
ーパ角度より若干大なるテーパ角度の内周面８ａを有す
る貫通孔８の内周面８ａに食い込み、これに阻止されて
脚柱４の沈下を確実に防止する。The downward load acting on the seat 5 is converted into a large force in the direction in which the mounting hole 7 of the base 3 is expanded by the wedge action in the taper fitting portion. It is indispensable that surface slip occurs between 42b and the inner peripheral surface 7a of the mounting hole 7. Therefore, according to the present invention, the through hole 8 having the inner peripheral surface 8a having a taper angle slightly larger than the taper angle of the inner peripheral surface 7a of the mounting hole 7 is continuously provided at the lower end portion 7b of the mounting hole 7. Therefore, the pedestal 4 fitted in the mounting hole 8 has the taper angle of the inner peripheral surface 7a of the mounting hole 7, that is, the outer peripheral surface 42b having the same taper angle.
The lower end peripheral edge 42d (FIG. 2) of the pedestal 4 having the ridge digs into the inner peripheral surface 8a of the through hole 8 having the inner peripheral surface 8a having a taper angle slightly larger than this taper angle, and is blocked by this. Surely prevent the sinking of 4.
【００１０】また金属製の脚柱４とこれと熱膨張率の異
なる合成樹脂製のボス部１の取付孔７との間に前者の外
径に比べて後者の内径が若干大きく変化して、取付孔に
対する脚柱の嵌合深さが微妙に深くなっても、あるいは
取付孔７の内径と脚柱４の外径との間に若干の製作誤差
をあり、脚柱の嵌合深さが微妙に変化しても、取付孔７
に連続する貫通孔８の内周面８ａはテーパ状に形成され
ているため、その嵌合深さに応じて脚柱４の下端部周縁
４２ｄがそのテーパ状内周面８ａに沿ってくさび状に食
い込み、前記脚柱４の嵌合深さの微妙な変化を吸収する
ことができ、脚柱と取付孔との間にクリアランスが発生
することがないため、使用時に脚柱が取付孔から容易に
抜け出て、脚柱に内蔵しているガススプリングを破損す
るという虞れがない。In addition, the inner diameter of the latter slightly changes from the outer diameter of the former between the metallic pillar 4 and the mounting hole 7 of the boss 1 made of synthetic resin having a different coefficient of thermal expansion. Even if the fitting depth of the pedestal with respect to the mounting hole becomes slightly deep, or there is a slight manufacturing error between the inner diameter of the mounting hole 7 and the outer diameter of the pedestal 4, the fitting depth of the pedestal is Mounting hole 7
Since the inner peripheral surface 8a of the through-hole 8 continuous with is tapered, the lower end peripheral edge 42d of the pedestal 4 is wedge-shaped along the tapered inner peripheral surface 8a according to the fitting depth. The pedestal can be easily inserted from the mounting hole at the time of use because it can bite into the pedestal and absorb a slight change in the fitting depth of the pedestal 4 and no clearance is generated between the pedestal and the mounting hole. There is no risk that the gas spring built into the pedestal will break out and be damaged.
【００１１】[0011]
【実施例】以下、本発明の実施例の図面を参照して説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】この椅子は、図１に示すように、ボス部１
及びこのボス部１の外周に放射状に突設した複数本の脚
羽根２を合成樹脂により一体に成形してなるベース３
と、前記ボス部１にテーパ嵌合させて立設した脚柱４と
を具備し、その脚柱４の上端に、一体に形成した座５及
び背もたれ６を配設してなる。This chair has a boss 1 as shown in FIG.
And a base 3 formed by integrally molding a plurality of leg blades 2 radially protruding from the outer periphery of the boss portion 1 with a synthetic resin.
And a pedestal 4 standing upright in the boss portion 1 by taper fitting, and a seat 5 and a backrest 6 which are integrally formed are arranged at the upper end of the pedestal 4.
【００１３】前記ベース３は、図２にも示すように、例
えばガラス繊維入りのポリアミド樹脂により作られたも
ので、その中心部分に肉厚を付与して前記ボス部１を設
けてある。そして、ボス部１の内側には、上下に貫通さ
せて取付孔７を設けてあるとともに、その内周面７ａを
上開きのモールステーパ面に形成してある。また、各脚
羽根２の裏面側には複数のリブを設けてある。As shown in FIG. 2, the base 3 is made of, for example, glass fiber-containing polyamide resin, and is provided with the boss portion 1 by giving a thickness to a central portion thereof. Inside the boss portion 1, a mounting hole 7 is provided so as to vertically penetrate therethrough, and an inner peripheral surface 7a thereof is formed as a Morse taper surface that opens upward. Further, a plurality of ribs are provided on the back surface side of each leg blade 2.
【００１４】脚柱４は、図２に示すように、ガススプリ
ング４１の固定外筒４２の内側に作動杆４３を収容し、
その作動杆４３から下方に突出させたロッド４４の下端
を前記固定外筒４２の底壁４２ａに係止リング１３によ
って係止したものである。前記作動杆４３の上端部４３
ａは、固定外筒４２の上端に蓋着した筒状ガイドキャッ
プ４５を貫通して外部に突出させてあり、前記座５の底
に配置したアルミダイキャスト製の支持基部５１の底に
テーパ嵌合部を介して結合させてある。そして、前記作
動杆４３の上端に突設した操作ロッド４３ｂを外部から
操作されるレバー１４によって押圧して内部のバルブを
開成させることによって、そのロック位置を上下方向へ
調節することができるようにした通常のものである。固
定外筒４２は、金属製のもので、その下端部４２ｃの外
周面４２ｂを前記取付孔７の内周面７ａに対応するモー
ルステーパ面に形成してある。As shown in FIG. 2, the pedestal 4 accommodates the operating rod 43 inside the fixed outer cylinder 42 of the gas spring 41,
The lower end of a rod 44 protruding downward from the operating rod 43 is locked to the bottom wall 42a of the fixed outer cylinder 42 by a locking ring 13. The upper end portion 43 of the operating rod 43
Reference character a denotes a cylindrical guide cap 45 attached to the upper end of the fixed outer cylinder 42 so as to project to the outside, and is taper-fitted to the bottom of a support base 51 made of aluminum die cast disposed on the bottom of the seat 5. It is connected through the joint. Then, the operating rod 43b protruding from the upper end of the operating rod 43 is pressed by the lever 14 operated from the outside to open the internal valve, so that the lock position can be adjusted in the vertical direction. It is a normal one. The fixed outer cylinder 42 is made of metal, and the outer peripheral surface 42b of the lower end 42c thereof is formed into a Morse taper surface corresponding to the inner peripheral surface 7a of the mounting hole 7.
【００１５】そして、前記取付孔７の下端部７ｂに、該
取付孔７の内周面７ａのテーパ角度α１に対してこのテ
ーパ角度よりも若干大なるテーパ角度α２、例えば５°
〜２０°の内周面８ａを有する貫通孔８を一体に連設し
てある。脚柱４を形成する固定外筒４２の下端部４２ｃ
を前記ボス部１の取付孔７にテーパ嵌合させてあるとと
もに、固定外筒４２の下端部４２ｃの周縁４２ｄを前記
貫通孔８の内周面８ａに食い込み状に係止させるように
してある。At the lower end portion 7b of the mounting hole 7, a taper angle α2 slightly larger than the taper angle α1 of the inner peripheral surface 7a of the mounting hole 7, for example, 5 °.
A through hole 8 having an inner peripheral surface 8a of up to 20 ° is integrally connected. Lower end 42c of fixed outer cylinder 42 forming pedestal 4
Is tapered into the mounting hole 7 of the boss portion 1, and the peripheral edge 42d of the lower end portion 42c of the fixed outer cylinder 42 is engaged with the inner peripheral surface 8a of the through hole 8 in a biting manner. .
【００１６】なお、９は、前記固定外筒４２の外側に装
着した筒状のカバーであり、前記ボス部１の上端に形成
した段状部分に嵌着してある。Reference numeral 9 is a cylindrical cover mounted on the outside of the fixed outer cylinder 42, and is fitted to a stepped portion formed on the upper end of the boss portion 1.
【００１７】また図２、特に図３に示すように、前記筒
状カバー９の外周側には、更にスライドカバー１０が設
けられ、該カバー１０の上端部に設けられた二股状の係
止具１０ａが前記支持基部５１に設けた係止孔１０ｂに
弾性係合するようにして係止され、該カバー１０の下端
部はフリーとなっており、ガススプリング４１の伸縮に
応じて筒状カバー９の外周側をスライドするようになっ
ている。このスライドカバーの取付構造によれば、従来
のようにビス止めを必要としないからそれだけ取り付け
が容易である。Further, as shown in FIG. 2, particularly FIG. 3, a slide cover 10 is further provided on the outer peripheral side of the cylindrical cover 9, and a bifurcated locking tool provided at the upper end of the cover 10. 10a is locked so as to elastically engage with the locking hole 10b provided in the support base 51, the lower end of the cover 10 is free, and the tubular cover 9 is expanded or contracted in accordance with the expansion and contraction of the gas spring 41. It is designed to slide on the outer peripheral side. According to this mounting structure of the slide cover, the screwing is not required unlike the conventional structure, so that the mounting is easy.
【００１８】したがって、以上のような構成によれば、
ベースが樹脂製のものであっても、脚柱４が初期の保持
位置から徐々に沈下するような不具合が有効に解消でき
るとともに、金属製の脚柱４とこれと熱膨張率の異なる
合成樹脂製のボス部１の取付孔７との間に前者の外径に
比べて後者の内径が若干大きく変化して、取付孔に対す
る脚柱の嵌合深さが微妙に深くなっても、あるいは取付
孔７の内径と脚柱４の外径との間に若干の製作誤差をあ
り、脚柱の嵌合深さが微妙に変化しても、取付孔７に連
続する貫通孔８の内周面８ａはテーパ状に形成されてい
るため、その嵌合深さに応じて脚柱４の下端部周縁４２
ｄがそのテーパ状内周面８ａに沿ってくさび状に食い込
み、前記脚柱４の嵌合深さの微妙な変化を吸収すること
ができる。Therefore, according to the above configuration,
Even if the base is made of resin, it is possible to effectively eliminate the problem that the pedestal 4 gradually sinks from the initial holding position, and the metallic pedestal 4 and a synthetic resin having a different coefficient of thermal expansion from the metallic pedestal 4 are used. Even if the inner diameter of the latter slightly changes from the outer diameter of the former between the mounting hole 7 of the boss 1 made of steel and the fitting depth of the pedestal into the mounting hole becomes slightly deep, or There is a slight manufacturing error between the inner diameter of the hole 7 and the outer diameter of the pedestal 4, and even if the fitting depth of the pedestal changes slightly, the inner peripheral surface of the through hole 8 continuous to the mounting hole 7 Since 8a is formed in a tapered shape, the lower end peripheral edge 42 of the pedestal 4 is formed depending on the fitting depth.
The d penetrates in a wedge shape along the tapered inner peripheral surface 8a, and it is possible to absorb a subtle change in the fitting depth of the pedestal 4.
【００１９】なお、本発明は、以上説明した実施例に限
定されないのは勿論であり、脚柱が伸縮機能を有しない
椅子等にも適用可能である。The present invention is not limited to the above-described embodiments, but can be applied to a chair or the like in which the pedestal has no extension / contraction function.
【００２０】[0020]
【発明の効果】以上詳述したように、本発明によると、
ベースを樹脂製のものにしても、脚柱が徐々に沈下する
という不具合の生じない椅子を提供できるものである。As described in detail above, according to the present invention,
Even if the base is made of resin, it is possible to provide a chair that does not cause the problem that the pedestal gradually sinks.
【００２１】また金属製の脚柱とこれと熱膨張率の異な
る合成樹脂製のボス部の取付孔との間に前者の外径に比
べて後者の内径が若干大きく変化して、取付孔に対する
脚柱の嵌合深さが微妙に深くなっても、あるいは取付孔
の内径と脚柱の外径との間に若干の製作誤差をあり、脚
柱の嵌合深さが微妙に変化しても、脚柱と取付孔との間
にクリアランスが発生することがないため、使用時に脚
柱が取付孔から容易に抜け出て、脚柱に内蔵しているガ
ススプリングを破損するという虞れがなく、長期間にわ
たって安定して使用することができる。In addition, the inner diameter of the latter slightly changes from the outer diameter of the former between the metal pedestal and the mounting hole of the boss portion made of synthetic resin having a different coefficient of thermal expansion. Even if the fitting depth of the pedestal becomes slightly deep, or there is a slight manufacturing error between the inner diameter of the mounting hole and the outer diameter of the pedestal, the fitting depth of the pedestal changes subtly. However, since there is no clearance between the pedestal and the mounting hole, there is no risk that the pedestal will easily come out of the mounting hole during use and damage the gas spring built into the pedestal. , Can be used stably for a long period of time.
【図１】 本発明の一実施例を示すもので、一部切欠し
た側面図である。FIG. 1 shows an embodiment of the present invention and is a partially cutaway side view.
【図２】 要部を示す縦断側面図である。FIG. 2 is a vertical sectional side view showing a main part.
【図３】 同他の要部を分解して示す斜視図である。FIG. 3 is a perspective view showing another main part in an exploded manner.
１ ボス部 ２ 脚羽根 ３ ベース ４ 脚柱 ７ 取付孔 ７ａ 内周面 ７ｂ 下端部 ８ 貫通孔 ８ａ 内周面 ４２ｂ 外周面 ４２ｃ 下端部 ４２ｄ 下端部周縁 1 boss part 2 leg blades 3 base 4 pedestal 7 mounting hole 7a inner peripheral surface 7b lower end 8 through hole 8a inner peripheral surface 42b outer peripheral surface 42c lower end 42d lower end peripheral
Claims (1)
たボス部及びこのボス部の外周に放射状に突設した複数
本の脚羽根を合成樹脂により一体に成形してなるベース
と、下端部の外周面にテーパを付与してなりその下端部
を前記ベースの取付孔にテーパ嵌合させた脚柱とを具備
してなる椅子において、前記取付孔の下端部に、該取付
孔の内周面のテーパ角度より若干大なるテーパ角度の内
周面を有する貫通孔を連設してなることを特徴とする椅
子。1. A base formed by integrally molding a boss portion having a mounting hole having a tapered inner peripheral surface and a plurality of leg blades radially protruding on the outer periphery of the boss portion with a synthetic resin. In a chair having a taper on the outer peripheral surface of the lower end and a pedestal having the lower end taper-fitted into the mounting hole of the base, in the lower end of the mounting hole, A chair characterized by comprising a series of through holes each having an inner peripheral surface having a taper angle slightly larger than the taper angle of the inner peripheral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3357123A JP2548862B2 (en) | 1991-12-24 | 1991-12-24 | Chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3357123A JP2548862B2 (en) | 1991-12-24 | 1991-12-24 | Chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0614822A true JPH0614822A (en) | 1994-01-25 |
| JP2548862B2 JP2548862B2 (en) | 1996-10-30 |
Family
ID=18452501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3357123A Expired - Lifetime JP2548862B2 (en) | 1991-12-24 | 1991-12-24 | Chair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2548862B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004267410A (en) * | 2003-03-07 | 2004-09-30 | Kumamoto Technology & Industry Foundation | Height adjustable chair |
| US6951637B2 (en) | 2000-11-30 | 2005-10-04 | Solarworld Aktiengesellschaft | Method and device for producing globular grains of high-puroty silicon having a diameter of between 50 μm and 300 μm and use of the same |
| US7396081B2 (en) * | 2003-05-16 | 2008-07-08 | Leggett & Platt Canada Co. | Chair height adjustment mechanism |
-
1991
- 1991-12-24 JP JP3357123A patent/JP2548862B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6951637B2 (en) | 2000-11-30 | 2005-10-04 | Solarworld Aktiengesellschaft | Method and device for producing globular grains of high-puroty silicon having a diameter of between 50 μm and 300 μm and use of the same |
| JP2004267410A (en) * | 2003-03-07 | 2004-09-30 | Kumamoto Technology & Industry Foundation | Height adjustable chair |
| US7396081B2 (en) * | 2003-05-16 | 2008-07-08 | Leggett & Platt Canada Co. | Chair height adjustment mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2548862B2 (en) | 1996-10-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19960618 |