JPH0449958Y2 - - Google Patents

Info

Publication number
JPH0449958Y2
JPH0449958Y2 JP1989111619U JP11161989U JPH0449958Y2 JP H0449958 Y2 JPH0449958 Y2 JP H0449958Y2 JP 1989111619 U JP1989111619 U JP 1989111619U JP 11161989 U JP11161989 U JP 11161989U JP H0449958 Y2 JPH0449958 Y2 JP H0449958Y2
Authority
JP
Japan
Prior art keywords
seat
seat plate
attached
axis
backrest
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
Application number
JP1989111619U
Other languages
Japanese (ja)
Other versions
JPH0351038U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1989111619U priority Critical patent/JPH0449958Y2/ja
Publication of JPH0351038U publication Critical patent/JPH0351038U/ja
Application granted granted Critical
Publication of JPH0449958Y2 publication Critical patent/JPH0449958Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03283Reclining 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
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03277Reclining 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
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255Reclining 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (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イス用椅子の座板と背も
たれを連動して揺動させる機構に関するものであ
る。
[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to a mechanism for interlockingly swinging the seat plate and backrest of an office chair.

〔従来の技術〕 近時、事務用椅子において、座板と背もたれを
連動的に揺動させる機構が多数提案され、すでに
実用に供されているものもある。
[Prior Art] Recently, a number of mechanisms for interlockingly rocking the seat plate and backrest of office chairs have been proposed, and some have already been put into practical use.

而して、従来提案されている機構の座板と背も
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つたものが大半であ
る。
Therefore, in the mechanism that has been proposed so far, when the seat plate sinks due to the load applied by a person, the backrest tilts backward in conjunction with this sinking, or, In most cases, when a person rests their back on the backrest, the backrest tilts backwards and the seat sinks in conjunction with this.

〔考案が解決しようとする課題〕[The problem that the idea attempts to solve]

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 a posture that can be accommodated by the conventional interlocking mechanism. That is, there are various ways to sit on a chair, such as sitting on a chair in such a way that either the front or back of the seat sinks under the seat, or sitting in a way that places a large amount of weight on 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つて、構成
部品の成形等に手間どり全体としてコスト高とな
つたり、組立てに多くの手間を要した上に、作動
がスムーズでないといつた諸々の問題が未だ解決
されていない。
In such cases, conventional interlocking mechanisms do not operate in a corresponding manner, or even if a mechanism that can operate is provided, the structure becomes extremely complex, requiring time and effort to mold the component parts, resulting in high costs overall. Various problems have not been solved yet, such as the fact that it required a lot of effort to assemble and did not operate smoothly.

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つて下方へ
沈み込まないと、座板に深く座り後傾姿勢で椅子
に掛けると、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
なつて、椅子の掛け心地が良好でなくなる。
In addition, when sitting with all your weight on the rear edge of the seat plate, if the rear edge of the seat does not bend and sink downward, sitting too deep on the seat plate and leaning backwards on the chair will result in Since the entire board sinks downward using its front end as a fulcrum, the person's feet are lifted up and the chair becomes uncomfortable.

〔課題を解決するための手段〕[Means to solve the problem]

本考案は上記のような問題点のない揺動機構を
提供することを課題としてなされたもので、その
課題を解決するための第一の構成は、回転椅子に
おける脚支柱1の上端に、前端側が座板の前方側
へ延長して形成された受座ブロツク2を取付け、
このブロツク2の先端部に形成した長穴に、座板
が取付けられる座板プレート4の先端を水平な軸
Bにより枢着し、且つ、このプレート4の下面と
上記ブロツク2の上面の間に板バネ5等による弾
性体を介在させる一方、背もたれが取付けられる
背もたれ支持部材6の下端側を座板プレート4の
下面側へ延長形成し、当該支持部材6の延長始端
部61に、座板プレート4の後端部を水平な軸D
により枢着すると共に、この支持部材6の延長先
端部62を受座ブロツク2に枢着されている軸A
により当該ブロツク2に取付け、且つ、この支持
部材6の延長先端部62に設けた軸Eと、受座ブ
ロツク2の前端の軸Bとの間にストローク動作を
調整できるようにしたガススプリング等のスプリ
ング7を架設したことを特徴とするものであり、
第二の構成は、回転椅子における脚支柱1の上端
に、前端側が座板の前方側へ延長して形成された
受座アーム部材23を取付け、この受座アーム部
材23の先端部に、座板が取付けられる座板プレ
ート4の先端に形成した長穴Cを水平な軸Bによ
り枢着し、且つ、このプレート4の下面と上記ブ
ロツク2の上面の間に板バネ5等による弾性体を
介在させる一方、背もたれが取付けられる背もた
れ支持部材6の下端側を座板プレート4の下面側
へ延長形成し、当該支持部材6の延長始端部61
に、座板プレート4の後端部を水平な軸Dにより
枢着すると共に、この支持部材6の延長先端部6
2を受座アーム部材23に枢着されている軸Aに
より当該アーム部材23に取付け、且つ、この支
持部材6の延長先端部62に設けた軸Eと、受座
アーム部材23の前端の軸Bとの間にストローク
動作を調整できるようにしたガススプリング等の
スプリング7を架設したことを特徴とするもので
ある。
The present invention was made with the objective of providing a swinging mechanism free from the above-mentioned problems, and the first configuration for solving the problem is to attach the front end to the upper end of the leg support 1 of the rotating chair. Install the catch block 2 whose side extends toward the front side of the seat plate,
The tip of a seat plate 4, on which the seat plate is attached, is pivotally connected to the elongated hole formed at the tip of the block 2 by a horizontal axis B, and between the bottom surface of this plate 4 and the top surface of the block 2. While an elastic body such as a leaf spring 5 is interposed, the lower end side of the backrest support member 6 to which the backrest is attached is formed to extend toward the lower surface side of the seat plate 4, and the seat plate plate is attached to the extension start end 61 of the support member 6. The rear end of 4 is aligned with the horizontal axis D
The extended tip 62 of the support member 6 is connected to the shaft A which is pivotally connected to the seat block 2.
A gas spring or the like is attached to the block 2 by the support member 6, and the stroke operation can be adjusted between the shaft E provided at the extended tip 62 of the support member 6 and the shaft B at the front end of the seat block 2. It is characterized by having a spring 7 installed,
In the second configuration, a seat arm member 23 whose front end side is extended toward the front side of the seat plate is attached to the upper end of the leg support 1 of the rotary chair, and a seat arm member 23 is attached to the tip of the seat arm member 23. An elongated hole C formed at the tip of the seat plate 4 to which the board is attached is pivoted by a horizontal axis B, and an elastic body such as a leaf spring 5 is installed between the bottom surface of this plate 4 and the top surface of the block 2. On the other hand, the lower end side of the backrest support member 6 to which the backrest is attached is formed to extend toward the lower surface side of the seat plate 4, and the extension start end 61 of the support member 6
The rear end of the seat plate 4 is pivotally attached to the horizontal axis D, and the extended tip 6 of the support member 6
2 is attached to the arm member 23 by a shaft A which is pivotally connected to the seat arm member 23, and a shaft E provided at the extended tip 62 of the support member 6 and a shaft at the front end of the seat arm member 23. A spring 7 such as a gas spring whose stroke operation can be adjusted is installed between the spring 7 and the spring 7B.

〔作用〕[Effect]

座板プレート4は、受座ブロツク2に軸Aによ
り揺動可能に取付けられたアーム部材3の前端、
又は、受座アーム部材23に座板プレート4の前
端に形成された長穴Cにおいて水平な軸Bにより
取付けられているので、軸Bを中心にして上下方
向に揺動可能である。
The seat plate 4 is a front end of an arm member 3 that is swingably attached to the catch block 2 about an axis A.
Alternatively, since it is attached to the seat arm member 23 by a horizontal shaft B in an elongated hole C formed at the front end of the seat plate 4, it can swing vertically about the shaft B.

揺動する上記座板プレート4に対し、軸Dを共
用して受座ブロツク2又は受座アーム部材23に
軸Aにより枢着された背もたれの取付部材6の延
長先端部62は、当該座板プレート4の前端と、
ガススプリング7を介して軸Bと結合されている
ことにより、これら座板プレート4と背もたれ取
付部材6とはいずれか一方の揺動に連動して揺動
する。
With respect to the swinging seat plate 4, the extended tip portion 62 of the backrest mounting member 6, which is pivotally connected to the catch block 2 or the catch arm member 23 by the axis A, sharing the axis D, is attached to the seat plate 4. the front end of plate 4;
Since they are connected to the shaft B via the gas spring 7, the seat plate 4 and the backrest mounting member 6 swing in conjunction with the swinging of either one of them.

〔実施例〕〔Example〕

次に、本考案の実施例を図に拠り説明する。 Next, embodiments of the present invention will be described with reference to the drawings.

第1図は本考案機構の一例であつて、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
の機構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、第4図は本考案機構の他の例であつて、機
構に荷重がかからない状態の側断面図、第5図は
第4図の機構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6図は第4図の機構の全体の構成を
示す斜視図である。
Figure 1 is a side sectional view of an example of the mechanism of the present invention, with no load applied to the mechanism, and Figure 2 is a side sectional view of the mechanism shown in Figure 1, with the seat plate sunk the most and the backrest mounting member at the rearmost position. 3 is a perspective view showing the overall structure of the mechanism shown in FIG. 1, and FIG. 4 is a side sectional view of the mechanism of the present invention in a state where no load is applied to the mechanism. 5 is a side sectional view of the mechanism shown in FIG. 4 when the seat plate is sunken the most and the backrest mounting member is tilted most backward; FIG. 6 is a side sectional view of the mechanism shown in FIG. 4. FIG. 3 is a perspective view showing the configuration.

第1図〜第3図に於て、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、支柱に内挿されているガススプリング
(図に表われず)により、その高さをある範囲で
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
レバーの断面である。
In Figures 1 to 3, 1 is a pole-shaped leg support similar to the leg support of a general rotating office chair, and a gas spring (not shown) inserted into the support. This allows the height to be changed freely within a certain range. 1a is a valve rod that opens and closes the valve of this gas spring;
1b is a cross section of 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ツク
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4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4との当接面2dがゴムやプラスチツク等
の弾性材により半球面状のクツシヨン面に形成さ
れている。
Reference numeral 2 denotes a seat block attached to the upper end of the pillar 1. In the example shown in the figure, the front side of the main body 2a fitted on the upper end of the pillar 1 is extended in an arm shape to form an arm portion 2b, and A horizontal bearing 2c oriented parallel to the width direction of the seat plate 4 is formed slightly forward of the central axis of the seat plate 4, and a contact surface 2d with the seat plate 4 is formed on the upper surface of the front end of the arm portion 2b. The cushion surface is made of an elastic material such as rubber or plastic and has a hemispherical shape.

3は平面からみ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3は、折曲げられた後
端側3aを受座ブロツク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により前記ブロツク2に枢着する一方、
当該アーム部材3の開放された前方側3bが、後
述する座板プレート4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 3 denotes an arm member formed into a substantially hairpin shape when viewed from above, and this arm member 3 is positioned so that its bent rear end side 3a surrounds the rear surface of the main body 2a of the catch block 2, and is attached to the bearing 2c. while being pivotally connected to said block 2 by a mounted shaft A;
The open front side 3b of the arm member 3 is connected to a long hole C formed in the front end side of the seat plate 4, which will be described later.
are pivotally connected to each other by an axis B.

而して、座板プレート4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4aが形成されており、この立
壁4aの前端に長穴Cが形成されて上記アーム部
材3の前端側3aに軸Bにより枢着されると共
に、このプレート4の後端が、後に述べる背もた
れBAを取付ける支持部材6の延長部6aにおけ
る手前側61の上部に、軸Dにより枢着されてい
る。
Therefore, the seat plate 4 has a seat plate sheet on the upper surface.
It is a flat plate on which the SE is provided, and standing walls 4a are formed on both sides when viewed from the front, and an elongated hole C is formed at the front end of the standing wall 4a, and a shaft B is formed at the front end side 3a of the arm member 3. At the same time, the rear end of the plate 4 is pivotally connected by an axis D to the upper part of the front side 61 of the extension 6a of the support member 6 to which the backrest BA, which will be described later, is attached.

上記座板プレート4は、その手前側下面におい
て受座ブロツク2の腕部2bに形成した当接面2
d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4の後部下面の間に、図の例では緩
い円弧状に反りを与えた板バネ5が一端を固定5
aして介装させられている。尚、図示しないが、
腕部2bの下面側から前記板バネ5を押すことが
できる調節ボルトを当該腕部2bに螺装貫設し、
このボルトを正、逆回転させることにより、板バ
ネ5の反り度を調節するようにしてもよい。ボル
トの下端には回転用ノブを取付け、また、上端に
は、硬質ゴム等による当接材を装着する。また、
前記バネ5に代えて、他の形式のバネやスプリン
グ、ゴム等による弾性体を介装させるようにして
もよい。この場合にも、適宜調節機構によつて弾
性体の反撥度を調節できるようにすることが望ま
しい。
The seat plate 4 has an abutment surface 2 formed on the arm portion 2b of the catch block 2 on the lower surface of the front side thereof.
On the other hand, between the top surface of the tip of the arm portion 2b and the rear bottom surface of the seat plate 4, a leaf spring 5, which is curved in a gentle arc shape in the example shown in the figure, fixes one end of the spring 5.
It has been interposed by a. Although not shown,
An adjustment bolt capable of pushing the leaf spring 5 from the lower surface side of the arm 2b is screwed through the arm 2b,
The degree of warpage of the leaf spring 5 may be adjusted by rotating this bolt in the forward or reverse direction. A rotation knob is attached to the lower end of the bolt, and a contact material made of hard rubber or the like is attached to the upper end. Also,
Instead of the spring 5, other types of springs, springs, elastic bodies made of rubber, etc. may be interposed. In this case as well, it is desirable to be able to adjust the degree of repulsion of the elastic body using an appropriate adjustment mechanism.

6は、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4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6aにおいて受座ブロツク
2やアーム部材3を外側から挟むことができるよ
うに、延長部6aの先端側62は二又状に形成さ
れ、この二又状をなす先端側62の上位に軸受2
cが、また、その下位に軸Eが取付けられる。
Reference numeral 6 denotes a support member to which the backrest BA is attached, and is bent and extended so that the lower side is positioned on the lower surface side of the seat plate 4, and at this extension part 6a, the seat block 2 and the arm member are attached. The distal end side 62 of the extension portion 6a is formed in a forked shape so that the bearing 2 can be held between the bearings 2 and 3 from the outside.
c, and the shaft E is attached below it.

而して、上記支持部材6は、その延長部6aに
おける二又状の先端側62の上方において、受座
ブロツク2の軸Aに枢着される一方、当該延長部
6aにおける手前側(延長始端側)61が座板プ
レート4に軸Dによつ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4の先端部とアーム部
材3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7がこれらの軸E,Bに架着されて
いる。これによつて背もたれの支持部材6は、受
座ブロツク2と座板プレート4とに連結的に取付
けられることになる。
The support member 6 is pivotally connected to the axis A of the catch block 2 above the forked tip end 62 of the extension 6a, while the support member 6 is pivoted to the shaft A of the seat block 2 on the front side (extension starting end) of the extension 6a. side) 61 is connected to the seat plate 4 by an axis D, and a shaft E is provided below the bearing 2c, and this axis E, the tip of the seat plate 4, and the arm member A gas spring 7 is mounted on these shafts E and B between the shaft B that connects the tip of the gas spring 3 with the tip end of the gas spring 7. As a result, the backrest support member 6 is attached to the catch block 2 and the seat plate 4 in a connected manner.

ここで、ガススプリング7は、その調整弁7a
の開閉操作をすることにより、シリンダの外に出
ているロツド7bの突出量を調整し、これによつ
て座板プレート4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7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 7 has its regulating valve 7a.
By opening and closing operations, the amount of protrusion of the rod 7b protruding from the cylinder can be adjusted, and thereby the degree of inclination of the seat plate 4 can be adjusted. Further, instead of the gas spring 7, a coil spring provided with a repulsive force adjustment mechanism, a stroke operation adjustment mechanism, etc. may be mounted on the shafts E and B.

このように構成される本考案機構の一例は、次
のように作動をする。
An example of the mechanism of the present invention configured as described above operates as follows.

いま、第1図に示す機構の座シート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4にかかる。
Now, when a person places a load on the seat SE of the mechanism shown in FIG. 1, the load is applied to the seat plate 4 that includes the seat SE.

この状態における座板プレート4は、その前、
後が受座ブロツク2における腕部2b先端の当接
面2dと板バネ5の後端を介して受座ブロツクの
腕部2bに支持されている。同時に、この座板プ
レート4は、その前端がブロツク2に軸Aにより
支持されているアーム部材3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、受座ブロツク2に軸Aで支持さ
れている背もたれ支持部材6の延長部6aの手前
側61に軸Dを介して連結されている。
In this state, the seat plate 4 is
The rear part is supported by the arm part 2b of the seat block 2 via the contact surface 2d of the tip of the arm part 2b of the seat block 2 and the rear end of the leaf spring 5. At the same time, the front end of the seat plate 4 is connected to the front end of the arm member 3, which is supported by the block 2 by the shaft A, via the elongated hole C and the shaft B, and the rear end of the seat plate 4 is The end thereof is connected via an axis D to the front side 61 of an extension 6a of the backrest support member 6, which is supported by the seat block 2 at an axis A.

これによつて座板プレート4は、受座ブロツク
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3を、その軸Aを中
心にして前記プレート4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4の下面に押圧さ
れることによつても緩衝される。
As a result, the seat plate 4 is supported so as to be swingable in the direction of sinking forward and backward centering around the abutment part 2d at the tip of the arm part 2b on the catch block 2, and this swingable state is The member 3 is placed in a state in which it can swing about its axis A in either direction in front of or behind the plate 4. Here, the forward tilting movement is also damped by the contact portion 2d being pressed against the lower surface of the seat plate 4.

而して、上記座板プレート4の前、後における
沈み込み揺動は、このプレート4の前端が、アー
ム部材3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7の先端に結合されているこ
と、及び、背もたれ支持部材6における延長部6
aの二又状をなす延長先端側61は、ガススプリ
ング7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7の一端、即ち、座板プ
レート4の前端は、その長穴Cと軸Bを介してガ
ススプリング7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6の軸Aを中
心とした前、後傾斜動を伴う。
Therefore, the front and rear sinking and rocking of the seat plate 4 is possible because the front end of the plate 4 is connected to the arm member 3 via the shaft B, and the shaft B is connected to the tip of the gas spring 7. and an extension 6 in the backrest support member 6.
The fork-shaped extension tip side 61 of a is connected to the shaft B via a gas spring 7, and one end of this gas spring 7, that is, the front end of the seat plate 4, is connected to the elongated hole. C and the gas spring 7 via the axis B, the support member 6 to which the backrest BA is attached is tilted forward and backward about the axis A.

即ち、座板プレート4が腕部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3と一体に、軸Aを
中心とする角回転作動となり、当該プレート4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7を介して背もたれ支持部材
6における延長部6aの先端側62における軸E
の部分を後方へ押し、この支持部材6の延長先端
側62がその前方側から後方へ向け押されること
によつて、当該支持部材6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6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4の後方の持上り動作が、座板
プレート4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, the seat plate 4 is in contact with the arm portion 2b at the contact portion 2d.
If the plate 4 is tilted forward and sunk further forward, this forward tilting and sinking motion becomes an angular rotation action around the axis A together with the arm member 3, which causes the plate 4 to lift rearward. The sinking motion is caused by the axis E at the distal end side 62 of the extension portion 6a of the backrest support member 6 via the gas spring 7.
By pushing the part rearward and pushing the extension end side 62 of this support member 6 from the front side toward the rear, the support member 6 is moved around the axis A,
The angular rotation of the support member 6 in the counterclockwise direction about the axis A and the rearward lifting movement of the seat plate 4 correspond to the length of the tip of the seat plate 4. The hole C and shaft B will be synchronized.

一方、座板プレート4がアーム部材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3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、当該アーム部材は
軸Aにより受座ブロツク2に取付けられているこ
と、及び、座板プレート4と背もたれ支持部材6
の延長始端部61とは軸Dで連結されていること
により、この支持部材6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 4 sinks behind the contact portion 2d of the arm member 2b, this sinking action attempts to pull the axis B of the arm member 3 upward around the contact portion 2d, and , the arm member is attached to the seat block 2 by the axis A, and the seat plate 4 and the backrest support member 6
Since the support member 6 is connected to the extension start end 61 by the axis D, the support member 6 is synchronously tilted rearward about the axis D.

このとき、座板プレート4が軸Bを中心の後方
へ傾斜するのは、アーム部材3における後端壁3
aが受座ブロツク2における本体2aの後面に当
たり、アーム部材3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 4 tilts rearward about the axis B because the rear end wall 3 of the arm member 3
This is because the point a hits the rear surface of the main body 2a of the catch block 2 and prevents the arm member 3 from rotating angularly in the clockwise direction about the axis A.

尚、上記の同期的動作は、背もたれの支持部材
6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4の後方側が沈み込んで生じる。
The above-mentioned synchronous movement also occurs when the backrest support member 6 is tilted backward by applying force, and the rear side of the seat plate 4 sinks.

次に、第4図〜第6図によつて、本考案機構の
別の実施例について説明する。第4図〜第6図に
おいて、第1図〜第3図と同一符号は同一部材を
指すものとする。
Next, another embodiment of the mechanism of the present invention will be described with reference to FIGS. 4 to 6. 4 to 6, the same reference numerals as in FIGS. 1 to 3 refer to the same members.

而して、第4図〜第6図に示す機構は、第1図
〜第3図により説明した機構において、受座ブロ
ツク2とアーム部材3とを、一つの部品、つま
り、受座アーム部材23として一体化した点で、
第1図〜第3図に示した機構と異なり、また、こ
の機構上の相違によつて、第4図〜第6図に示す
機構では座板プレート4と背もたれ支持部材6と
の傾動々作が第1図〜第3図に示した機構の動作
と異なる点がある。以下、この機構並びに作動の
相違点を中心にして本考案機構の別例について説
明する。
The mechanism shown in FIGS. 4 to 6 is different from the mechanism explained in FIGS. 1 to 3 by combining the catch block 2 and the arm member 3 into one part, that is, the catch arm member. In that it was unified as 23,
Unlike the mechanism shown in FIGS. 1 to 3, and due to this mechanical difference, the mechanism shown in FIGS. There are some points in which the operation of the mechanism differs from that shown in FIGS. 1 to 3. Hereinafter, another example of the mechanism of the present invention will be described, focusing on the differences in this mechanism and its operation.

第4図〜第6図に示す機構に於て、受座アーム
部材23は、第1図〜第3図に示した受座ブロツ
ク2における腕部2bに、第1図〜第3図に示し
たアーム部材3の先端側が一体的に形成されたも
ので、当該アーム部材3の後端側に相当する部分
は受座アーム部材23にはない。また、第1図〜
第3図に示す機構において、受座ブロツク2の腕
部2bの先端側上面に設けた当接面2dも形成さ
れていない。
In the mechanism shown in FIGS. 4 to 6, the catch arm member 23 is attached to the arm portion 2b of the catch block 2 shown in FIGS. 1 to 3 as shown in FIGS. 1 to 3. The distal end side of the arm member 3 is integrally formed, and the seat arm member 23 does not have a portion corresponding to the rear end side of the arm member 3. Also, Figure 1~
In the mechanism shown in FIG. 3, the contact surface 2d provided on the upper surface of the distal end side of the arm portion 2b of the seat block 2 is also not formed.

この結果、第4図〜第6図に示す機構では、受
座アーム部材23の後端側23aが支柱1に取付
けられる一方、この後端側23aから座板プレー
ト4の前方側へ向けて腕部23bが延長形成され
ると共に、この腕部23bの先端に軸Bが取付け
られている。
As a result, in the mechanism shown in FIGS. 4 to 6, the rear end side 23a of the seat arm member 23 is attached to the support column 1, while the arm is attached from this rear end side 23a toward the front side of the seat plate 4. The arm portion 23b is formed to be extended, and a shaft B is attached to the tip of the arm portion 23b.

この軸Bは、座板プレート4の先端側に水平前
向きに形成された切欠状の長穴Cに結合されて、
座板プレート4をその前端で支持している点、お
よびガススプリング7の先端側が結合されている
点は、先の実施例と同様である。
This shaft B is connected to a notched elongated hole C formed horizontally forward on the distal end side of the seat plate 4.
This embodiment is similar to the previous embodiment in that the seat plate 4 is supported at its front end and that the distal end side of the gas spring 7 is connected.

一方、背もたれの支持部材6は、その延長部6
aの先端側62において、軸受23cに取付けら
れた軸Aにより受座アーム部材23に枢着される
と共に、軸Eによつてガススプリング7の後端側
に連結され、また、この延長部6aの手前側61
において座板プレート4の後端に軸Dにより枢着
されている点も、先の実施例とほぼ同様である。
On the other hand, the support member 6 of the backrest has its extension 6
A is pivotally connected to the seat arm member 23 by a shaft A attached to a bearing 23c, and is connected to the rear end side of the gas spring 7 by a shaft E, and this extension 6a front side 61
The point that the seat plate 4 is pivotally attached to the rear end of the seat plate 4 by a shaft D is also substantially the same as in the previous embodiment.

更に、腕部23の先端側上面と座板プレート4
の後端側下面の間には、前端を腕部23に固定し
て板バネ5がその前端を固定5aして介挿されて
いる点も先の実施例と同様である。
Furthermore, the upper surface of the distal end side of the arm portion 23 and the seat plate 4
Similar to the previous embodiment, a leaf spring 5 is inserted between the lower surfaces of the rear end side with its front end fixed to the arm portion 23 and its front end fixed 5a.

上記構造による機構は座板プレート4の上面に
取付けられたシートSEに人が腰掛けるとその荷
重を座板プレート4の下面に設けた板バネ5が支
える。板バネ5が伸びると座板プレート4は軸B
を中心にして後方側へ沈み込む。
In the mechanism with the above structure, when a person sits on the seat SE attached to the upper surface of the seat plate 4, the leaf spring 5 provided on the lower surface of the seat plate 4 supports the load. When the leaf spring 5 is extended, the seat plate 4 moves towards the axis B.
It sinks toward the rear with the center at the center.

座板プレート4の後方が沈み込むと、当該プレ
ート4の後端が軸Dにより連結されている背もた
れ支持部材6の延長部6aの先端部62が軸Aを
中心にして時計方向へ少し回転する。この回転は
前記延長先端部62の下方に位置付けられた軸E
によりガススプリング7を前方へ押出すように作
用する一方、座板プレート4を後方へ引張るよう
に作用する。
When the rear of the seat plate 4 sinks, the tip 62 of the extension 6a of the backrest support member 6, to which the rear end of the plate 4 is connected by the axis D, rotates slightly clockwise about the axis A. . This rotation is caused by an axis E located below the extension tip 62.
This acts to push the gas spring 7 forward, and at the same time acts to pull the seat plate 4 backward.

ガススプリング7はそのバルブ7aが閉ぢられ
ているときはそのロツド7bは進退しないから、
支持部材6の軸Aを中心とした回転を阻止する。
バルブ7aが開いているときは、支持部材6の軸
Aを中心とした回転を緩衝し、第5図々示の状態
になる。
When the valve 7a of the gas spring 7 is closed, the rod 7b does not move forward or backward.
Rotation of the support member 6 about the axis A is prevented.
When the valve 7a is open, the rotation of the support member 6 about the axis A is damped, and the state shown in FIG. 5 is achieved.

上記二つの本考案機構において共通した作動態
様は、座板プレート4の後方においてそのプレー
ト4を沈み込ませる力が作用すると、背もたれ支
持部材6が、その延長部6aにおいて、軸Aを中
心に時計方向に角回転すると同時に、軸Dにおい
て支持部材6の手前側(延長始端側)61が下方
へ大きく沈み込む点である。
The operating mode common to the above two mechanisms of the present invention is that when a force is applied behind the seat plate 4 to cause the plate 4 to sink, the backrest support member 6 moves clockwise around the axis A at its extension 6a. This is the point at which the front side (extension starting end side) 61 of the support member 6 on the axis D sinks significantly downward at the same time as the support member 6 rotates angularly in the direction.

このことは、座板プレート4の上面に取付けら
れるシートSEが図示するように、支持部材6の
延長始端側61の上面部分にまで及ぶように形成
されているとき、当該シートSEの後端側はこの
部分より折れ曲つたようになり前方側に比べ大き
く沈み込むことを意味する。
This means that when the seat SE attached to the upper surface of the seat plate 4 is formed to extend to the upper surface portion of the extension start end side 61 of the support member 6, as shown in the figure, the rear end side of the sheet SE means that this part is bent and sinks more than the front side.

シートSEの後端側がそれより前方部分より大
きく沈み込むことは、特に背もたれBAを大きく
後方へ傾斜させるような座り方をするとき、シー
トSEの後端側近くに位置するヒツプポイントが
背もたれBAの大きな後方傾斜に同期して沈み込
むため、着座姿勢が不自然にならないという利点
がある。
The reason why the rear end of the seat SE sinks more than the front part is because the hip point located near the rear end of the seat SE is caused by a large amount of the backrest BA, especially when sitting with the backrest BA tilted significantly backwards. Since the seat sinks in synchronization with the backward tilt, it has the advantage that the sitting posture does not become unnatural.

以上のような作動をする本考案機構の構成部材
は、板バネ5、ガススプリング7は、市販の既製
品を利用し、支柱1、受座ブロツク2、アーム部
材3、座板プレート4、及び、背もたれの支持部
材6等の各部材の形態がシンプルゆえに、これら
の各部材を、金属の鋳造、プレス加工等、或は、
合成樹脂の成形により容易に製造することができ
る。
The constituent members of the mechanism of the present invention that operate as described above are the leaf spring 5 and the gas spring 7, which are commercially available ready-made products, and the strut 1, the seat block 2, the arm member 3, the seat plate 4, and the gas spring 7. , Since the shapes of each member such as the backrest support member 6 are simple, these members can be manufactured by metal casting, press working, etc.
It can be easily manufactured by molding synthetic resin.

〔考案の効果〕[Effect of idea]

本考案は以上の通りであつて、座板プレートを
その前後において揺動可能に形成すると共に、こ
のような作動をする座板プレートに、背もたれが
取付けられる支持部材を連動した動作をするよう
に連結したから、椅子に掛けた人の姿勢に応じた
座板プレートの傾斜とこれに連動する背もたれ側
の傾斜、或は、背もたれの傾斜に対応連動した座
板プレートの傾斜を円滑に実現することができる
という効果がある。また、このような動作をする
ための機構はシンプルで、部品点数も少な目であ
るから、製造する上でも有利である。
The present invention is as described above, and the seat plate is formed to be able to swing back and forth, and the support member to which the backrest is attached is operated in conjunction with the seat plate that operates in this manner. Since they are connected, it is possible to smoothly realize the inclination of the seat plate according to the posture of the person sitting on the chair and the inclination of the backrest side that corresponds to this, or the inclination of the seat plate that corresponds to the inclination of the backrest. It has the effect of being able to. Further, the mechanism for performing such an operation is simple and the number of parts is small, which is advantageous in terms of manufacturing.

従つて、本考案は座板の沈み込みと背もたれの
傾きが連動する椅子の連動機構としてきわめて有
用である。
Therefore, the present invention is extremely useful as an interlocking mechanism for a chair in which the depression of the seat plate and the inclination of the backrest are linked.

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

第1図は本考案機構の一例であつて、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
の機構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、第4図は本考案機構の他の例であつて、機
構に荷重がかからない状態の側断面図、第5図は
第4図の機構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6図は第4図の機構の全体の構成を
示す斜視図である。 1……支柱、2……受座ブロツク、3……アー
ム部材、4……座板プレート、5……板バネ、6
……背もたれの支持部材、61……支持部材6の
手前側(延長始端側)、62……支持部材6の延
長先端側、7……ガススプリング、A,B,D,
E……水平な軸、C……長穴、SE……シート、
BA……背もたれ。
Figure 1 is a side sectional view of an example of the mechanism of the present invention, with no load applied to the mechanism, and Figure 2 is a side sectional view of the mechanism shown in Figure 1, with the seat plate sunk the most and the backrest mounting member at the rearmost position. 3 is a perspective view showing the overall structure of the mechanism shown in FIG. 1, and FIG. 4 is a side sectional view of the mechanism of the present invention in a state where no load is applied to the mechanism. 5 is a side sectional view of the mechanism shown in FIG. 4 when the seat plate is sunken the most and the backrest mounting member is tilted most backward; FIG. 6 is a side sectional view of the mechanism shown in FIG. 4. FIG. 3 is a perspective view showing the configuration. 1... Support column, 2... Seat block, 3... Arm member, 4... Seat plate, 5... Leaf spring, 6
...Backrest support member, 61... Front side of support member 6 (extension start end side), 62... Extension end side of support member 6, 7... Gas spring, A, B, D,
E...Horizontal axis, C...Elongated hole, SE...Seat,
BA...Backrest.

Claims (1)

【実用新案登録請求の範囲】 1 回転椅子における脚支柱1の上端に、前端側
を座板の前方側へ延長して形成された受座ブロ
ツク2を取付け、このブロツク2を囲撓するよ
うに形成されたアーム状部材であつてその後部
側が水平な軸Aにより当該ブロツク2に枢着さ
れたアーム部材3を支柱1の前方へ向けて設け
ると共に、このアーム部材3の先端部に、座板
が取付けられる座板プレート4の先端に形成し
た長穴Cを水平な軸Bにより枢着し、且つ、こ
のプレート4の下面と上記ブロツク2の上面の
間に板バネ5等による弾性体を介在させる一
方、背もたれが取付けられる背もたれ支持部材
6の下端側を座板プレート4の下面側へ延長形
成し、当該支持部材6の延長始端部61を、座
板プレート4の後端部に水平な軸Dにより枢着
すると共に、この支持部材6の延長先端部62
を、前記アーム部材3を受座ブロツク2に枢着
している軸Aにより当該ブロツク2に取付け、
且つ、この支持部材6の延長先端部に設けた軸
Eと、アーム部材3の前端における軸Bの間に
ストローク動作を調整できるようにしたガスス
プリング等のスプリング7を架設したことを特
徴とする椅子の座板と背もたれの揺動機構。 2 回転椅子における脚支柱1の上端に、前端側
が座板の前方側へ延長して形成された受座アー
ム部材23を取付け、この受座アーム部材23
の先端部に、座板が取付けられる座板プレート
4の先端に形成した長穴Cを水平な軸Bにより
枢着し、且つ、このプレート4の下面と上記ブ
ロツク2の上面の間に板バネ5等による弾性体
を介在させる一方、背もたれが取付けられる背
もたれ支持部材6の下端側を座板プレート4の
下面側へ延長形成し、当該支持部材6の延長始
端部61に、座板プレート4の後端部を水平な
軸Dにより枢着すると共に、この支持部材6の
延長先端部62を受座アーム部材23に枢着さ
れている軸Aにより当該アーム部材23に取付
け、且つ、この支持部材6の延長先端部62に
設けた軸Eと、受座アーム部材23の前端の軸
Bとの間にストローク動作を調整できるように
したガススプリング等のスプリング7を架設し
たことを特徴とする椅子の座板と背もたれの揺
動機構。
[Claims for Utility Model Registration] 1. A seat block 2 formed by extending the front end side toward the front side of the seat plate is attached to the upper end of the leg support 1 of the rotating chair, and the seat block 2 is surrounded by the seat block 2. An arm member 3, which is a formed arm-shaped member and whose rear side is pivoted to the block 2 by a horizontal axis A, is provided facing forward of the column 1, and a seat plate is attached to the tip of the arm member 3. A long hole C formed at the tip of the seat plate 4 to which the seat plate 4 is attached is pivoted by a horizontal axis B, and an elastic body such as a leaf spring 5 is interposed between the bottom surface of this plate 4 and the top surface of the block 2. On the other hand, the lower end side of the backrest support member 6 to which the backrest is attached is extended toward the lower surface side of the seat plate 4, and the extension starting end 61 of the support member 6 is aligned with an axis horizontal to the rear end of the seat plate 4. D, and the extended tip 62 of this support member 6.
, the arm member 3 is attached to the seat block 2 by a shaft A pivotally connected to the block 2,
In addition, a spring 7 such as a gas spring is installed between the axis E provided at the extended end of the support member 6 and the axis B at the front end of the arm member 3, such as a gas spring capable of adjusting the stroke movement. A rocking mechanism for the seat and backrest of the chair. 2. Attach a catch arm member 23 whose front end side extends toward the front side of the seat plate to the upper end of the leg support 1 of the rotating chair.
A long hole C formed at the tip of the seat plate 4 to which the seat plate is attached is pivotally connected to the tip of the seat plate 4 by a horizontal shaft B, and a leaf spring is connected between the bottom surface of this plate 4 and the top surface of the block 2. 5 or the like, the lower end side of the backrest support member 6 to which the backrest is attached is extended toward the lower surface side of the seat plate 4, and the extension start end 61 of the support member 6 is provided with a The rear end portion is pivotally attached to the horizontal axis D, and the extended tip portion 62 of the support member 6 is attached to the arm member 23 by the axis A that is pivotably attached to the seat arm member 23. 6. A chair characterized in that a spring 7 such as a gas spring is installed between an axis E provided at an extended tip 62 of the seat arm member 6 and an axis B at the front end of the seat arm member 23. A rocking mechanism for the seat and backrest.
JP1989111619U 1989-09-26 1989-09-26 Expired JPH0449958Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989111619U JPH0449958Y2 (en) 1989-09-26 1989-09-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989111619U JPH0449958Y2 (en) 1989-09-26 1989-09-26

Publications (2)

Publication Number Publication Date
JPH0351038U JPH0351038U (en) 1991-05-17
JPH0449958Y2 true JPH0449958Y2 (en) 1992-11-25

Family

ID=31660091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989111619U Expired JPH0449958Y2 (en) 1989-09-26 1989-09-26

Country Status (1)

Country Link
JP (1) JPH0449958Y2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5567402B2 (en) * 2010-06-11 2014-08-06 株式会社岡村製作所 Chair
US20130169017A1 (en) * 2010-06-11 2013-07-04 Okamura Corporation Chair

Also Published As

Publication number Publication date
JPH0351038U (en) 1991-05-17

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