JPH0618534Y2 - Buffer force adjustment mechanism in chair - Google Patents
Buffer force adjustment mechanism in chairInfo
- Publication number
- JPH0618534Y2 JPH0618534Y2 JP1989133100U JP13310089U JPH0618534Y2 JP H0618534 Y2 JPH0618534 Y2 JP H0618534Y2 JP 1989133100 U JP1989133100 U JP 1989133100U JP 13310089 U JP13310089 U JP 13310089U JP H0618534 Y2 JPH0618534 Y2 JP H0618534Y2
- Authority
- JP
- Japan
- Prior art keywords
- seat
- seat plate
- chair
- block
- attached
- 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.)
- Expired - Lifetime
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は主としてオフィス用椅子における座板等の緩衝
力を調節するための機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention mainly relates to a mechanism for adjusting the cushioning force of a seat plate or the like in an office chair.
オフィス用椅子において、座板の緩衝力を調節する機構
としては、種々のものが提案され、実用に供されている
ものも多数ある。In an office chair, various mechanisms have been proposed and put into practical use as mechanisms for adjusting the cushioning force of a seat plate.
近時、オフィス用の椅子として、座板と背もたれを連動
的に揺動させるようにしたものが多数提案されており、
そのための座板と背もたれの連動形態は、座板が人が掛
けることによる荷重で沈み込めば、この沈み込みに連動
して背もたれが後方へ傾く、或は、人が背もたれに背を
あずければ、背もたれが後傾すると同時に、これと連動
して座板が沈み込むといったものが大半である。Recently, as office chairs, a large number of chairs in which a seat plate and a backrest are swingably interlocked with each other have been proposed.
For that reason, the interlocking form of the seat plate and the backrest is that if the seat plate sinks due to the load applied by a person, the backrest will tilt backwards in conjunction with this depression, or if the person leans on the backrest, In most cases, the seat back sinks in conjunction with the backrest tilting backwards.
しかし、人が事務用椅子に掛ける態様は、必ずしも、従
来の連動機構で対応できる姿勢ばかりではない。即ち、
座板の前方又は後方のいずれかがその下側へ沈み込むよ
うな体重の掛け方で椅子に着いたり、背もたれに大きく
荷重をかけるような座り方などの種々の態様があるので
ある。However, the manner in which a person hangs on an office chair is not necessarily limited to the posture that can be handled by the conventional interlocking mechanism. That is,
There are various modes such as sitting on a chair with a weight so that either the front side or the rear side of the seat board sinks to the lower side, or a sitting style in which a large load is applied to the backrest.
このような場合、従来の連動機構では対応した作動をし
ないか、或は、作動できる機構が付与されていても、構
造がきわめて複雑になって、構成部品の成形時に手間ど
り全体としてコスト高となったり、組立てに多くの手間
を要した上に、作動がスムースでないといった諸々の問
題が未だ解決されていない。In such a case, the conventional interlocking mechanism does not perform the corresponding operation, or even if a mechanism capable of operating is provided, the structure becomes extremely complicated, resulting in high labor cost at the time of molding the component parts and high cost as a whole. However, various problems such as a troublesome assembling process and a smooth operation are still unsolved.
また、座板の後端側に体重をかけた座り方をする場合に
おいて、座席の後端側が曲がって下方へ沈み込まない
と、座板に深く座り後傾姿勢で椅子に掛けたとき、座板
全体がその前端部を支点として下方へ沈み込むからその
者の足が持上がり加減になって、椅子の掛け心地が良好
でなくなる。Also, when sitting with weight on the rear end of the seat plate, if the rear end of the seat does not bend and sink downwards, when sitting deeply on the seat plate and sitting on the chair in a backward tilted position, Since the whole plate sinks downward with its front end as a fulcrum, the person's foot is lifted up and down, and the comfort of the chair is not good.
本考案が解決しようとする課題は、通常の椅子は勿論、
上記のような座板と背もたれを連動的に揺動させる椅子
において採用すれば、いかなる座り方でも掛け心地が良
くなる、座板等の緩衝力を調節するための機構を提供す
ることである。The problem to be solved by the present invention is, of course, for a normal chair,
It is an object of the present invention to provide a mechanism for adjusting a cushioning force of a seat plate or the like, which is comfortable to wear in any sitting manner when it is adopted in a chair in which a seat plate and a backrest are oscillated in an interlocking manner as described above.
本考案は上記のような課題を解決することを目的として
なされたもので、その構成は、椅子の脚支柱１の上端
に、前端側を座板ＳＥの前方側へ延長して形成された受
座ブロック２を取付け、この受座ブロック２の脚支柱１
に近接した位置に、前端側が前記座板ＳＥの前方側へ延
長されたアーム部材４の後部と、背もたれ支持部材７の
下方側の延長部7aとを軸Ａにより枢着し、この支持部材
７の延長部7aにおける先端側72と前記アーム部材４の前
端とをガススプリング８等の伸縮部材を介して軸Ｂ，Ｅ
により連結する一方、前記延長部7aにおける手前側71
を、上面に座板ＳＥが取付けられ前部が前記受座ブロッ
ク２の先端に支持されている座板プレート３の後部に軸
Ｄにより取付け、かつ、この座板プレート３の前端立壁
部に形成した長穴Ｃに前記軸Ｂを遊挿して成る椅子にお
いて、前記受座ブロック２と前記座板プレート３の下面
との間に、板バネから成る弾性緩衝体５を介在させると
共に、前記受座ブロック２を下から貫通して先端部を弾
性緩衝体５の下面に当接させネジ等により上下動させて
前記弾性緩衝体５を押圧する力を調節し、その弾性を調
節する緩衝力調節部材６を取付けたことを特徴とするも
のである。The present invention has been made for the purpose of solving the above-mentioned problems, and its configuration is a receiving member formed at the upper end of the leg support 1 of the chair by extending the front end side to the front side of the seat plate SE. The seat block 2 is attached, and the leg support 1 of this seat block 2
A rear portion of the arm member 4 whose front end side is extended to the front side of the seat plate SE and a lower extension portion 7a of the backrest support member 7 are pivotally attached by a shaft A to a position close to the support member 7 The front end 72 of the extension portion 7a of the shaft 7 and the front end of the arm member 4 are connected to the shafts B and E via an elastic member such as a gas spring 8.
On the other hand, the front side 71 in the extension 7a
Is attached to the rear portion of the seat plate 3 supported by the seat plate SE on the upper surface and the front portion of which is supported by the tip of the seat block 2 by the shaft D, and is formed on the front end standing wall portion of the seat plate 3. In the chair formed by loosely inserting the shaft B into the elongated hole C, the elastic cushioning body 5 made of a leaf spring is interposed between the seat block 2 and the lower surface of the seat plate 3, and the seat is seated. A buffer force adjusting member that penetrates the block 2 from below and contacts the lower end of the elastic cushioning body 5 with the tip end abutted against the lower surface of the elastic cushioning body 5 to adjust the force pressing the elastic cushioning body 5 to adjust its elasticity. 6 is attached.
受座ブロックと、座板プレートとの間に介在させた弾性
緩衝体である板バネを、受座ブロックを下側から貫通し
先端部を前記板バネの下面に当接させネジにより上下動
可能な弾性緩衝体の前記先端部を板バネに押圧させるこ
とによって、弾性緩衝体の緩衝力を容易に調節すること
ができる。A leaf spring, which is an elastic shock absorber interposed between the seat block and the seat plate, penetrates the seat block from the lower side, makes the tip end contact the lower surface of the leaf spring, and can be moved up and down with a screw. It is possible to easily adjust the cushioning force of the elastic cushioning body by pressing the tip end of the elastic cushioning body against the leaf spring.
次に、本考案の実施例を、本考案機構を採用した座板と
背もたれを連動的に揺動させる椅子の揺動機構の図に拠
り説明する。Next, an embodiment of the present invention will be described with reference to a diagram of a swinging mechanism of a chair that swings a seat plate and a backrest that employ the mechanism of the present invention in an interlocking manner.
第１図は揺動機構に荷重がかからない状態の側断面図、
第２図は第１図の座板プレートが最も沈み込み、且つ、
背もたれ取付部材が最も後方へ傾いた状態の側断面図、
第３図は前記揺動機構の全体の構成を示す斜視図であ
る。FIG. 1 is a side sectional view showing a state where no load is applied to the swing mechanism,
FIG. 2 shows that the seat plate of FIG.
A side cross-sectional view of the backrest mounting member inclined to the rearmost,
FIG. 3 is a perspective view showing the overall structure of the swing mechanism.
第１図〜第３図において、１は一般的な回転事務用椅子
における脚支柱と同様のポール状をなす脚支柱で、その
内部に挿装されているガススプリング（図に表われず）
により、高さをある範囲で自由に変更できるようにされ
ている。1aはこのガススプリングのバルブの開閉をする
バルブ杆、1bはこのバルブ杆1aの押下げ操作をする操作
レバーである。In FIGS. 1 to 3, reference numeral 1 is a leg strut having a pole shape similar to the leg strut in a general rotary office chair, and a gas spring inserted therein (not shown).
The height can be freely changed within a certain range. Reference numeral 1a is a valve rod for opening and closing the valve of this gas spring, and 1b is an operating lever for pushing down the valve rod 1a.
２は上記支柱１の上端に取付けた受座ブロックで、図の
例では、支柱１の上端に被嵌される本体2aの前方側を腕
状に延長して腕部2bを形成すると共に、支柱１の中心軸
の稍前方に、座板プレート３の幅方向と平行な向きの水
平な軸受2cが形成され、更に、腕部2bの前端上面に、座
板プレート３との当接面2dがゴムやプラスチック等の弾
性材により半球面状のクッション面に形成されている。Reference numeral 2 is a seat block attached to the upper end of the support column 1. In the example shown in the figure, the front side of the main body 2a fitted on the upper end of the support column 1 is extended like an arm to form an arm portion 2b, and A horizontal bearing 2c oriented parallel to the width direction of the seat plate 3 is formed in the front of the central axis of 1, and a contact surface 2d with the seat plate 3 is formed on the upper surface of the front end of the arm 2b. It is formed on a hemispherical cushion surface by an elastic material such as rubber or plastic.
４は平面から見て略ヘアピン状に形成したアーム部材
で、このアーム部材４は、折曲げられた後端側4aを受座
ブロック２における本体2aの後面を囲撓するように位置
付け、軸受2cに着装された軸Ａにより前記ブロック２に
枢着する一方、当該アーム部材４の開放された前方側4b
が、後述する座板プレート３の前端側に形成した長穴Ｃ
に、軸Ｂにより枢着結合されている。Reference numeral 4 denotes an arm member formed in a substantially hairpin shape when viewed from a plane. The arm member 4 is positioned so that the bent rear end side 4a surrounds the rear surface of the main body 2a of the seat block 2 and the bearing 2c. While being pivotally attached to the block 2 by an axis A attached to the arm 2, the arm member 4 has an open front side 4b.
Is a long hole C formed on the front end side of the seat plate 3 described later.
Pivotally connected by an axis B.
而して、座板プレート３は、上面に座板シートＳＥが設
けられる平板状のプレートで、正面から見て両側に立壁
部3aが形成されており、この立壁3aの前端に長穴Ｃが形
成されて上記アーム部材４の前端側4aに軸Ｂにより枢着
されると共に、このプレート３の後端が、後に述べる背
もたれＢＡを取付ける支持部材７の延長部7aにおける手
前側71の上部に、軸Ｄにより枢着されている。Thus, the seat plate 3 is a flat plate having the seat plate SE provided on the upper surface thereof, and the standing wall portions 3a are formed on both sides when viewed from the front, and the elongated hole C is formed at the front end of the standing wall 3a. The plate 3 is formed and pivotally attached to the front end side 4a of the arm member 4 by an axis B, and the rear end of the plate 3 is located above the front side 71 of the extension 7a of the support member 7 for mounting the backrest BA, which will be described later. It is pivotally attached by the axis D.
上記座板プレート３は、その手前側下面において受座ブ
ロック２の腕部2bに形成した当接面2dに当接させられる
一方、腕部2bの先端上面と座板プレート３の後部下面の
間に、緩い円弧状に反りを与えた板バネから成る弾性緩
衝体５が一端を固定5aして介装されている。The seat plate 3 is brought into contact with the contact surface 2d formed on the arm 2b of the seat block 2 on the front lower surface thereof, while between the upper end of the arm 2b and the lower rear surface of the seat plate 3. Further, an elastic cushioning body 5 composed of a leaf spring having a gentle arcuate warp is interposed with one end fixed 5a.
６は弾性緩衝体５の緩衝力を調節する緩衝力調節部材
で、先端部に当接子6aを取付けたボルト6bの後端部にノ
ブ6cを取付けて構成され、受座ブロック２の腕部2bに螺
装してあり、ノブ6cを回転させて当接子6aを進退させ、
その弾性緩衝体５への押圧力を調節することによって、
弾性緩衝材５の緩衝力を調節するものである。即ち、当
接子6aの押圧力を強くすれば前記緩衝力は大きくなり、
逆に押圧力を弱めれば前記緩衝力は小さくなるのであ
る。Reference numeral 6 is a cushioning force adjusting member for adjusting the cushioning force of the elastic cushioning body 5. The cushioning force adjusting member 6 is formed by attaching a knob 6c to a rear end of a bolt 6b having an abutment 6a attached to a tip end thereof. 2b is screwed, the knob 6c is rotated to move the contactor 6a forward and backward,
By adjusting the pressing force on the elastic buffer 5,
The cushioning force of the elastic cushioning material 5 is adjusted. That is, if the pressing force of the contactor 6a is increased, the cushioning force is increased,
On the contrary, if the pressing force is weakened, the buffering force becomes small.
７は、前述したように、上部に背もたれＢＡが取付けら
れる支持部材で、下方側が座板プレート３の下面側に位
置付けられるように曲げられつつ延長形成されていると
共に、この延長部7aにおいて受座ブロック２やアーム部
材４を外側から挟むことができるように、延長部7aの先
端側72は二又状に形成され、この二又状をなす先端側72
の上位に軸受2cが、また、その下位に軸Ｅが取付けられ
る。As described above, 7 is a support member to which the backrest BA is attached on the upper part, which is bent and extended so that the lower side is positioned on the lower surface side of the seat plate 3, and at the extended portion 7a, the seat is received. The distal end side 72 of the extension portion 7a is formed in a bifurcated shape so that the block 2 and the arm member 4 can be sandwiched from the outside, and the bifurcated distal end side 72 is formed.
The bearing 2c is mounted on the upper side of the shaft and the shaft E is mounted on the lower side thereof.
而して、上記支持部材７は、その延長部7aにおける二又
状の先端側72の上方において、受座ブロック２の軸Ａに
枢着される一方、当該延長部7aにおける手前側（延長始
端側）71が座板プレート３に軸Ｄによって結合されると
共に、前記軸受2cの下方に軸Ｅが設けられており、この
軸Ｅと、上記の座板プレート３の先端部とアーム部材４
の先端部とを結合している軸Ｂとの間に、ガススプリン
グ８がこれらの軸Ｅ，Ｂに架着されている。これによっ
て背もたれの支持部材７は、受座ブロック２と座板プレ
ート３とに連結的に取付けられることになる。尚、ガス
スプリング８を２本平行に設け、緩衝力調整部材６を２
本のガススプリングの間に設けるようにしてもよい。Thus, the support member 7 is pivotally attached to the axis A of the seat block 2 above the bifurcated distal end side 72 of the extension portion 7a, while the front side (extension start end) of the extension portion 7a is supported. Side) 71 is coupled to the seat plate 3 by a shaft D, and a shaft E is provided below the bearing 2c. The shaft E, the tip of the seat plate 3 and the arm member 4 are provided.
A gas spring 8 is mounted on the shafts E and B between the shaft and the shaft B connecting the front end of the gas spring. As a result, the support member 7 of the backrest is attached to the receiving block 2 and the seat plate 3 in a connected manner. In addition, two gas springs 8 are provided in parallel, and the buffer force adjusting member 6 is
It may be provided between the gas springs of the book.
ここで、ガススプリング８は、その調整弁8aの開閉操作
をすることにより、シリンダの外に出ているロッド8bの
突出量を調整し、これによって座板プレート３の傾き度
合を調整することができる。また、このガススプリング
８に代え、撥力調整機構やストローク作動の調整機構な
どを付加したコイルスプリングを軸Ｅ，Ｂに架着しても
よい。Here, the gas spring 8 can adjust the protrusion amount of the rod 8b protruding outside the cylinder by opening / closing the adjusting valve 8a, and thereby adjusting the inclination degree of the seat plate 3. it can. Instead of the gas spring 8, a coil spring having a repulsive force adjusting mechanism, a stroke actuating adjusting mechanism, or the like may be mounted on the shafts E and B.
このように構成される本考案機構を採用した椅子は、次
のように作動をする。A chair using the mechanism of the present invention configured as described above operates as follows.
まず、緩衝力調節部材６のノブ6cを操作し、当接子6aの
弾性緩衝体５への押圧力を調整して、弾性緩衝体５の緩
衝力を所望の度合いに調節する。First, the knob 6c of the cushioning force adjusting member 6 is operated to adjust the pressing force of the contactor 6a against the elastic cushioning body 5 to adjust the cushioning force of the elastic cushioning body 5 to a desired degree.
次いで、座シートＳＥに人が掛けると、その荷重は、座
シートＳＥを含む座板プレート３にかかる。Then, when a person applies the seat SE, the load is applied to the seat plate 3 including the seat SE.
この状態における座板プレート３は、その前，後が受座
ブロック２における腕部2b先端の当接面2dと弾性緩衝体
６の後端を介して受座ブロック２の腕部2bに支持されて
いる。同時に、この座板プレート４は、その前端がブロ
ック２に軸Ａにより支持されているアーム部材４の前端
に長穴Ｃと軸Ｂを介して連結されていると共に、当該座
板プレート４の後端が、受座ブロック２に軸Ａで支持さ
れている背もたれ支持部材７の延長部7aの手前側71に軸
Ｄを介して連結されている。The front and rear sides of the seat plate 3 in this state are supported by the arm portion 2b of the seat block 2 via the contact surface 2d at the tip of the arm portion 2b of the seat block 2 and the rear end of the elastic cushioning body 6. ing. At the same time, the seat plate 4 is connected to the front end of the arm member 4 whose front end is supported by the block 2 by the shaft A through the elongated hole C and the shaft B, and The end is connected via a shaft D to the front side 71 of the extension portion 7a of the backrest support member 7 supported by the seat block 2 on the shaft A.
これによって座板プレート３は、受座ブロック２におけ
る腕部2bの先端の当接部2dを中心に前，後で沈み込む方
向に揺動可能に支持され、この揺動可能状態がアーム部
材４を、その軸Ａを中心にして前記プレート３の前，後
いずれの方向においても揺動できる状態におく。ここ
で、前傾揺動は当接部2dが座板プレート３の下面に押圧
されることによっても緩衝される。As a result, the seat plate 3 is swingably supported in the direction in which the seat plate 3 sinks forward and backward around the contact portion 2d at the tip of the arm 2b in the receiving block 2, and this swingable state is the arm member 4. Is set so that it can be swung about its axis A in either the front or rear direction of the plate 3. Here, the forward tilt swing is also buffered by the contact portion 2d being pressed against the lower surface of the seat plate 3.
而して、上記座板プレート３の前，後における沈み込み
揺動は、このプレート３の前端が、アーム部材４に軸Ｂ
を介して連結されていること、軸Ｂはガススプリング８
の先端に結合されていること、及び、背もたれ支持部材
７における延長部7aの二又状をなす延長先端側71は、ガ
ススプリング８を介して軸Ｂに結合されていること、並
びに、このガススプリング８の一端、即ち、座板プレー
ト３の前端は、その長穴Ｃと軸Ｂを介してガススプリン
グ８に結合されていることにより、背もたれＢＡが取付
けられる支持部材７の軸Ａを中心とした前，後傾斜動を
伴う。Thus, when the seat plate 3 is moved forward and backward, the front end of the plate 3 causes the arm member 4 to move to the axis B.
Shaft B is connected to the gas spring 8
Of the backrest support member 7 is connected to the shaft B via the gas spring 8, and the extension tip side 71 of the extension portion 7a of the backrest support member 7 is connected to the shaft B. One end of the spring 8, that is, the front end of the seat plate 3 is connected to the gas spring 8 through the elongated hole C and the shaft B, so that the shaft A of the support member 7 to which the backrest BA is attached is centered. It involves tilting movements before and after.
即ち、座板プレート３が受座ブロック２の腕部2bの当接
部2dより前側において前傾して沈み込めば、この前傾沈
み込み動作は、アーム部材４と一体に、軸Ａを中心とす
る角回転作動となり、座板プレート３の後方の持上りを
招くと同時に、前記沈み込み動作は、ガススプリング８
を介して背もたれ支持部材７における延長部7aの先端側
72における軸Ｅの部分を後方へ押し、この支持部材７の
延長先端側72がその前方側から後方へ向け押されること
によって、当該支持部材７が軸Ａを中心にして、反時計
方向の角回転させられるようになり、この支持部材７の
軸Ａを中心とした反時計方向の角回転と座板プレート３
の後方の持上り動作が、座板プレート３の先端の長穴Ｃ
と軸Ｂの部分において同期することとなる。That is, if the seat plate 3 is tilted forward and sinks in front of the abutting portion 2d of the arm 2b of the seat block 2, this forward tilting / sinking action is integrated with the arm member 4 about the axis A. And the seat plate 3 is lifted up rearward, and at the same time, the sinking operation is performed by the gas spring 8
The tip side of the extension portion 7a of the backrest support member 7
By pushing the portion of the axis E of the support member 72 rearward and pushing the extension tip side 72 of the support member 7 from the front side to the rear side, the support member 7 is rotated counterclockwise about the axis A. The support member 7 can be rotated, and counterclockwise angular rotation about the axis A of the support member 7 and the seat plate 3
The rearward lifting action of the seat plate 3 has a long hole C
And the axis B is synchronized.
一方、座板プレート３が受座ブロック２の腕部2bの当接
部2dより後側で沈み込むと、この沈み込み動作は、アー
ム部材４の軸Ｂを当接部2dを中心に上方へ引上げようと
すると共に、当該アーム部材４は軸Ａにより受座ブロッ
ク２に取付けられていること、及び、座板プレート３と
背もたれ支持部材７の延長始端部71とは軸Ｄで連結され
ていることにより、この支持部材７が軸Ｄを中心にして
後方へ向け同期的に傾斜動作させられる。On the other hand, when the seat plate 3 sinks behind the contact portion 2d of the arm portion 2b of the seat block 2, this sinking operation causes the axis B of the arm member 4 to move upward with the contact portion 2d as the center. When the arm member 4 is pulled up, the arm member 4 is attached to the seat block 2 by the axis A, and the seat plate 3 and the extension start end 71 of the backrest support member 7 are connected by the axis D. As a result, the support member 7 is tilted in a synchronous manner toward the rear centering on the axis D.
このとき、座板プレート３が軸Ｂを中心に後方へ傾斜す
るのは、アーム部材４における後端壁4aが受座ブロック
２における本体2aの後面に当たり、アーム部材４の軸Ａ
を中心とする時計方向角回転を阻止するからである。At this time, the seat plate 3 inclines rearward about the axis B because the rear end wall 4a of the arm member 4 contacts the rear surface of the main body 2a of the seat block 2 and the axis A of the arm member 4 extends.
This is because the clockwise angular rotation centering around is blocked.
尚、上記の同期的動作は、背もたれの支持部材７に力を
かけそれを後方に傾斜させたときも、座板プレート３の
後方側が沈み込んで生じる。Incidentally, the above-mentioned synchronous operation occurs when the rear side of the seat plate 3 is depressed even when a force is applied to the support member 7 of the backrest and the support member 7 is tilted rearward.
この間、弾性緩衝体６による緩衝力は適当に発揮され、
掛け心地は極めて良好なものとなる。During this time, the cushioning force by the elastic cushioning body 6 is appropriately exerted,
The comfort is extremely good.
本考案は上述の通りであって、受座ブロックの前端部を
中心に前，後に揺動可能にした座板プレートの後部に、
受座ブロックに枢着されている背もたれ支持部材を取付
けると共に、この背もたれ支持部材の延長部先端側と座
板プレートの前端側とを受座ブロックに沿って配設した
伸縮部材等を介して接続し、座板プレートと背もたれ支
持部材が連動する構造としたので、座板プレートの前後
揺動が可能となり、しかも、椅子において、受座ブロッ
クと、座板プレートとの間に介在させた弾性緩衝体であ
る板バネを、受座ブロックを下側から貫通し先端部を前
記板バネの下面に当接させネジにより上下動可能な弾性
緩衝体の前記先端部を板バネに押圧させることによっ
て、弾性緩衝体の緩衝力を容易に調節することができる
から、本考案機構を採用した椅子は、使用者の好みに応
じた緩衝力により緩衝されるので、常に掛け心地のよい
ものとなる。The present invention is as described above, and in the rear part of the seat plate which is swingable forward and backward around the front end of the seat block,
The backrest support member pivotally attached to the seat block is mounted, and the tip end side of the extension portion of the backrest support member and the front end side of the seat plate are connected via an elastic member arranged along the seat block. Since the seat plate and the backrest support member are interlocked with each other, the seat plate can be rocked back and forth, and in the chair, the elastic cushion interposed between the seat block and the seat plate is used. A leaf spring, which is a body, penetrates the receiving block from the lower side, abuts the tip end on the lower surface of the leaf spring, and causes the leaf spring to press the tip end of the elastic buffer body that can be moved up and down by a screw. Since the cushioning force of the elastic cushioning body can be easily adjusted, the chair adopting the mechanism of the present invention is cushioned by the cushioning force according to the preference of the user, so that it is always comfortable to wear.
第１図は本考案機構を採用した一例の椅子の揺動機構に
荷重がかからない状態の側断面図、第２図は第１図の座
板プレートが最も沈み込み、且つ、背もたれ取付部材が
最も後方へ傾いた状態の側断面図、第３図は第１図の機
構の全体の構成を示す斜視図である。 １……支柱、２受座ブロック、３……座板プレート、４
……アーム部材、５……弾性緩衝体、６……緩衝力調節
部材、6a……当接子、6b……ボルト、6c……ノブFIG. 1 is a side sectional view of an example of a chair swing mechanism adopting the mechanism of the present invention in a state where no load is applied, and FIG. 2 shows the seat plate of FIG. 1 being most depressed and the backrest mounting member being the most. FIG. 3 is a side sectional view in a state of being tilted rearward, and FIG. 3 is a perspective view showing an overall configuration of the mechanism of FIG. 1 ... Prop, 2 Seat block, 3 ... Seat plate, 4
…… Arm member, 5 …… Elastic buffer, 6 …… Buffer force adjusting member, 6a …… Abutment, 6b …… Bolt, 6c …… Knob
Claims (1)
Ｅの前方側へ延長して形成された受座ブロック２を取付
け、この受座ブロック２の脚支柱１に近接した位置に、
前端側が前記座板ＳＥの前方側へ延長されたアーム部材
４の後部と、背もたれ支持部材７の下方側の延長部7aと
を軸Ａにより枢着し、この支持部材７の延長部7aにおけ
る先端側72と前記アーム部材４の前端とをガススプリン
グ８等の伸縮部材を介して軸Ｂ，Ｅにより連結する一
方、前記延長部7aにおける手前側71を、上面に座板ＳＥ
が取付けられ前部が前記受座ブロック２の先端に支持さ
れている座板プレート３の後部に軸Ｄにより取付け、か
つ、この座板プレート３の前端立壁部に形成した長穴Ｃ
に前記軸Ｂを遊挿して成る椅子において、前記受座ブロ
ック２と前記座板プレート３の下面との間に、板バネか
ら成る弾性緩衝体５を介在させると共に、前記受座ブロ
ック２を下から貫通して先端部を弾性緩衝体５の下面に
当接させネジ等により上下動させて前記弾性緩衝体５を
押圧する力を調節し、その弾性を調節する緩衝力調節部
材６を取付けたことを特徴とする椅子における緩衝力調
節機構。1. A seat plate S having a front end on the upper end of a leg support 1 of a chair.
Equipped with a seat block 2 formed by extending to the front side of E, at a position close to the leg support 1 of this seat block 2,
A rear end of the arm member 4 whose front end side is extended to the front side of the seat plate SE and a lower extension 7a of the backrest support member 7 are pivotally attached by an axis A, and a tip of the extension 7a of the support member 7 is provided. The side 72 and the front end of the arm member 4 are connected by shafts B and E via a stretchable member such as a gas spring 8, while the front side 71 of the extension portion 7a is seated on a top plate SE.
Is attached to the rear portion of the seat plate 3 supported by the front end of the seat block 2 by a shaft D, and the long hole C formed in the front end wall of the seat plate 3 is attached.
In the chair formed by loosely inserting the shaft B into the seat, an elastic cushioning body 5 made of a leaf spring is interposed between the seat block 2 and the lower surface of the seat plate 3, and the seat block 2 is lowered. The tip of the elastic cushioning body 5 is abutted against the lower surface of the elastic cushioning body 5 and vertically moved by a screw or the like to adjust the force pressing the elastic cushioning body 5, and a cushioning force adjusting member 6 for adjusting the elasticity is attached. A cushioning force adjusting mechanism in a chair characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989133100U JPH0618534Y2 (en) | 1989-11-17 | 1989-11-17 | Buffer force adjustment mechanism in chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989133100U JPH0618534Y2 (en) | 1989-11-17 | 1989-11-17 | Buffer force adjustment mechanism in chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0372752U JPH0372752U (en) | 1991-07-23 |
| JPH0618534Y2 true JPH0618534Y2 (en) | 1994-05-18 |
Family
ID=31680516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989133100U Expired - Lifetime JPH0618534Y2 (en) | 1989-11-17 | 1989-11-17 | Buffer force adjustment mechanism in chair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0618534Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006346272A (en) * | 2005-06-17 | 2006-12-28 | Family Co Ltd | Chair type massage machine |
| JP4702742B2 (en) * | 2005-07-29 | 2011-06-15 | コクヨ株式会社 | Chair |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125848U (en) * | 1984-07-23 | 1986-02-15 | 株式会社ホウトク | rock king chair |
| JPH0436677Y2 (en) * | 1987-05-12 | 1992-08-28 |
-
1989
- 1989-11-17 JP JP1989133100U patent/JPH0618534Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0372752U (en) | 1991-07-23 |
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