JP2003284619A - Chair - Google Patents

Chair

Info

Publication number
JP2003284619A
JP2003284619A JP2002089550A JP2002089550A JP2003284619A JP 2003284619 A JP2003284619 A JP 2003284619A JP 2002089550 A JP2002089550 A JP 2002089550A JP 2002089550 A JP2002089550 A JP 2002089550A JP 2003284619 A JP2003284619 A JP 2003284619A
Authority
JP
Japan
Prior art keywords
seat
chair
plate
lock
engaging
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
Application number
JP2002089550A
Other languages
Japanese (ja)
Other versions
JP4060621B2 (en
Inventor
Nobuyuki Ueda
伸行 上田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kokuyo Co Ltd
Takano Co Ltd
Original Assignee
Kokuyo Co Ltd
Takano Co Ltd
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 by Kokuyo Co Ltd, Takano Co Ltd filed Critical Kokuyo Co Ltd
Priority to JP2002089550A priority Critical patent/JP4060621B2/en
Publication of JP2003284619A publication Critical patent/JP2003284619A/en
Application granted granted Critical
Publication of JP4060621B2 publication Critical patent/JP4060621B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat locking mechanism of a chair capable of operating in a small space, which is used for the chair capable of moving a seat forward/ backward. <P>SOLUTION: A narrow plate-like operating board 9 is provided under the seat 6 so as to extend widthwise of the chair C. By moving the operating board 9 forward/backward, the seat 6 is movable forward/backward. The seat 6 is locked or unlocked in a specified position by moving the operating board 9 widthwise of the chair C. <P>COPYRIGHT: (C)2004,JPO

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、座を前後に移動可
能に構成した椅子に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair whose seat is movable back and forth.

【0002】[0002]

【従来の技術】椅子において、その座り心地の良否は、
身体に与える影響、執務効率等に与える影響の極めて大
きいファクターであり、椅子の基本機能として最も重視
されるところである。このため、例えば座を前後に移動
させ、背凭れのリクライニングや背座ロッキングと併用
して背凭れを後ろに傾けた姿勢において腰が確実に座に
保持されるようにすることが考えられている。
2. Description of the Related Art In a chair, the quality of sitting comfort is
This is a factor that has an extremely large effect on the body and work efficiency, and is the most important factor as the basic function of the chair. Therefore, for example, it is considered that the seat is moved back and forth, and in combination with reclining of the backrest and back seat rocking, the waist is securely held in the seat in the posture in which the backrest is tilted backward. .

【0003】[0003]

【発明が解決しようとする課題】このような椅子におい
て、座の前後の位置を決定してロックするために、棒状
の操作桿又はピンを固定側に設けた複数の固定孔のいず
れかに選択的に係り合わせる構成のものが存在する。
In such a chair, in order to determine the front and rear positions of the seat and lock the seat, a rod-shaped operating rod or a pin is selected from a plurality of fixing holes provided on the fixed side. There are configurations that are related to each other.

【0004】しかし、係合部の強度を確保するには、操
作桿又はピンを太くしなければならず、座と座受との間
の限られたスペースに収納しにくくなる。さらに、操作
桿又はピンを太くすると固定箇所のピッチを小さくでき
ず、座の前後位置をきめ細かく設定することは困難にな
る不具合も発生する。
However, in order to secure the strength of the engaging portion, the operating rod or the pin must be made thick, and it becomes difficult to store it in the limited space between the seat and the seat support. Further, if the operating rod or the pin is thickened, the pitch of the fixed portion cannot be reduced, and it becomes difficult to finely set the front and rear positions of the seat.

【0005】そこで本発明は以上に述べた問題を解決
し、座のロック機構に関し、限られたスペースに収納で
きるようにするとともに、強度を確保しつつピッチを小
さくできるようにするものである。
Therefore, the present invention solves the above-mentioned problems, and relates to a seat lock mechanism that can be accommodated in a limited space, and at the same time, the pitch can be reduced while ensuring the strength.

【0006】[0006]

【課題を解決するための手段】すなわち本発明に係る椅
子は、座の下方に椅子本体の幅方向に延びる板状の操作
板を設け、座の前後移動に伴って操作板を前後に移動し
得るように構成するとともに、操作板を椅子本体の幅方
向に移動させて座を所定位置にロックし、またロックを
解除し得るように構成していることを特徴とする。
That is, a chair according to the present invention is provided with a plate-shaped operation plate extending in the width direction of the chair body below the seat, and moves the operation plate back and forth as the seat moves back and forth. It is characterized in that the operation plate is moved in the width direction of the chair body to lock the seat at a predetermined position, and the lock can be released.

【0007】このようなものであれば、操作板を肉薄の
ものにできるので、座と座受の間の限られた空間に収納
しやすくなる。
With such a structure, since the operating plate can be made thin, it becomes easy to store it in the limited space between the seat and the seat support.

【0008】このような椅子の座のロック機構の一例と
しては、操作板に噛み合いに必要な形状を有する係合部
を設けるとともに、固定側に前記係合部が噛み合うこと
のできる形状を有する被係合部を設け、前記係合部と前
記被係合部とを噛み合わせて座を所定位置にロックし得
るように構成しているものを挙げることができる。
As an example of such a chair seat locking mechanism, an operating plate is provided with an engaging portion having a shape required for engagement, and a fixed side has a shape capable of engaging with the engaging portion. An example is one in which an engaging portion is provided, and the seat is locked at a predetermined position by engaging the engaging portion and the engaged portion.

【0009】特に、ロックの強度を確保しつつ座を固定
する位置のピッチを小さくするには、係合部がその操作
板の一端に歯を形成してなるものであり、被係合部が固
定側の対面位置に同様の歯を形成してなるものであるも
のにすればよい。歯を多数設けることにより、座を固定
する位置のピッチを小さくしてもロックの強度を確保で
きるようになるからである。
Particularly, in order to secure the strength of the lock and reduce the pitch of the position for fixing the seat, the engaging portion is formed by forming teeth on one end of the operating plate, and the engaged portion is It suffices that the same tooth is formed at the facing position on the fixed side. By providing a large number of teeth, it is possible to secure the strength of the lock even if the pitch of the position for fixing the seat is reduced.

【0010】簡単な構成によりこのようなロック機構を
実現できるようにするには、座を座受に載せ置くように
構成しているとともに、前記被係合部を一端縁に歯を設
けた細長い板状の部材を用いて形成し、この被係合部を
座受と座との間に介在させるようにすればよい。このよ
うなものであれば、座を座受に載せ置くように構成して
いるので上載荷重により座の前後スライドをより確実に
ロックできるとともに、被係合部を座受と座との間に介
在させることにより、座受の内面に歯を設ける手間が省
けるからである。
In order to realize such a locking mechanism with a simple structure, the seat is configured to be placed on a seat support, and the engaged portion is an elongated member provided with teeth at one end edge. It may be formed by using a plate-shaped member, and the engaged portion may be interposed between the seat support and the seat. In such a case, since the seat is configured to be placed on the seat support, the front and rear slides of the seat can be more reliably locked by the loading load, and the engaged portion is placed between the seat support and the seat. This is because the interposition eliminates the need for providing teeth on the inner surface of the seat support.

【0011】弾性力により前記係合部と前記被係合部と
が密着ないし略密着するように構成しているものであれ
ば、操作板に力を加えない状態でも座の前後位置をロッ
クしたままにしておくことができる。
If the engaging portion and the engaged portion are in close contact or substantially in close contact with each other by the elastic force, the front and rear positions of the seat are locked even when no force is applied to the operation plate. You can leave it alone.

【0012】座を座受の上面により効果的に載せ置くよ
うにするには、座の下面に操作板を収納する溝を設けれ
ばよい。この溝に操作板を収納して操作板の下面と座の
下面とを完全にないし略完全に面一にできるからであ
る。
In order to place the seat on the upper surface of the seat more effectively, a groove for accommodating the operation plate may be provided on the lower surface of the seat. This is because the operation plate can be housed in this groove so that the lower surface of the operation plate and the lower surface of the seat can be made flush with each other completely or substantially.

【0013】座を確実に前後方向にのみ移動できるよう
にするには、座を座受に載せ置くように構成していると
ともに、座受に前後方向に延びる長孔を設け、座に固定
した突起をこの長孔に係り合せるようにすればよい。長
孔と突起との掛かり合わせにより座の移動方向及び移動
範囲を規制することができるからである。
In order to ensure that the seat can be moved only in the front-rear direction, the seat is configured to be placed on the seat support, and the seat support is provided with an elongated hole extending in the front-back direction and fixed to the seat. The protrusion may be engaged with this long hole. This is because the moving direction and the moving range of the seat can be regulated by the engagement of the long hole and the protrusion.

【0014】少ない部品点数でより簡単に操作板を移動
させるようにするには、操作板の一端部を下方に屈曲さ
せて操作部を形成すればよい。この操作部をつまんで操
作を行うことができるとともに、操作板を椅子本体から
突出させて外部に露出するようにしなくても操作部に手
をかけて操作を行うことができるからである。
In order to move the operating plate more easily with a small number of parts, one end of the operating plate may be bent downward to form the operating portion. This is because it is possible to perform an operation by pinching the operation portion, and it is possible to perform an operation by holding the operation portion with a hand without exposing the operation plate from the chair body to expose it to the outside.

【0015】[0015]

【発明の実施の形態】以下に本発明の一実施形態につい
て述べる。
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below.

【0016】本実施形態に係る椅子Cは、図1〜図3に
示すように、構造体としての基盤をなすその椅子本体1
が、脚2と、脚2の上端側に取り付けた支持基部3と、
前部を前記支持基部3に支持させた座受4と、基端を前
記支持基部3に取り付け中間部に前記座受4の後部を支
持させた背フレーム5とから構成されるもので、この椅
子本体1の座受4及び背フレーム5に各々座6及び背凭
れ7を取り付けるようにしている。
The chair C according to the present embodiment, as shown in FIGS. 1 to 3, has its chair body 1 as a base as a structure.
Is a leg 2, and a support base 3 attached to the upper end side of the leg 2,
The seat support 4 has a front portion supported by the support base 3, and a back frame 5 having a base end attached to the support base 3 and a rear portion of the seat support 4 supported at an intermediate portion. A seat 6 and a backrest 7 are attached to the seat support 4 and the back frame 5 of the chair body 1, respectively.

【0017】先ず、椅子本体1について説明する。First, the chair body 1 will be described.

【0018】脚2は、5本の脚羽根21の中央から支柱
22を立ち上げた構造をなし、支柱22は昇降可能であ
って内部に図示しないガススプリング機構を組み込んで
いる。
The leg 2 has a structure in which a column 22 is raised from the center of five leg blades 21. The column 22 can be moved up and down and a gas spring mechanism (not shown) is incorporated inside.

【0019】支持基部3は、前記支柱22の上端部に回
転可能に取り付けたもので、図4に示すように、前方に
水平に延びその一部に支柱22を上下方向に貫通させて
なる底壁31と、この底壁31の前端から斜め前方に傾
斜して立ち上がる前壁32と、これら底壁31及び前壁
32の周囲より起立して前記底壁31及び前壁32とと
もに内側に上方に開口する機構部収納空間を形成する側
壁33とよりなる概略舟形をなす。この支持基部3は、
その側壁33の前部に、それぞれ背向する方向に軸心を
一致させて前座受取付軸34を一体突設或いは外付けで
きるようになっている。またこの支持基部3は、その底
壁上方を横断する位置に、左右の側壁33間に亘って背
取付軸35を貫通させている。
The support base 3 is rotatably attached to the upper end of the support column 22, and as shown in FIG. 4, the support base 3 extends horizontally to the front and has a bottom formed by penetrating the support column 22 in the vertical direction. The wall 31, a front wall 32 that rises obliquely forward from the front end of the bottom wall 31, and stands up from the periphery of the bottom wall 31 and the front wall 32 and rises inward together with the bottom wall 31 and the front wall 32. A substantially boat shape is formed by the side wall 33 forming the opening for storing the mechanism portion. This support base 3 is
The front seat receiving attachment shaft 34 can be integrally projected or externally attached to the front portion of the side wall 33 with their axes aligned in the direction facing back. Further, the support base 3 has a spine mounting shaft 35 penetrating between the left and right side walls 33 at a position crossing above the bottom wall thereof.

【0020】座受4は、その平面図を図5、支持基部3
に取り付けた状態の斜視図を図6に示すように、前記支
持基部3上に位置し、一定間隔を保って前後に平行に延
びる縦フレーム41と、これら縦フレーム41の前端近
傍部間及び後端近傍部間を連結する位置に横架した横フ
レーム42とを具備する概略井桁状をなす。各々の縦フ
レーム41の前端近傍部には、前後方向に延びる長孔4
11が対応づけて設けてあり、各々の長孔411に前記
支持基部3の前座受取付軸34の端部を同長孔411に
沿ってスライド移動可能に挿入している。
The seat support 4 is shown in plan view in FIG.
As shown in FIG. 6 which is a perspective view of a state in which the vertical frames 41 are mounted on the support base 3, the vertical frames 41 extend in parallel in the front-rear direction at regular intervals, and between the front-end vicinity portions and rear portions of the vertical frames 41. The horizontal frame 42 is provided at a position where the end-neighboring portions are connected to each other, and has a substantially cross beam shape. In the vicinity of the front end of each vertical frame 41, there is an elongated hole 4 extending in the front-back direction.
11 are provided in association with each other, and the end of the front seat receiving attachment shaft 34 of the support base 3 is slidably inserted into each elongated hole 411 along the elongated hole 411.

【0021】背フレーム5は、図2、図3等に示すよう
に、概略L字形に屈曲する一対の背フレーム要素51
と、これらの背フレーム要素51の上端近傍部間を一定
の間隙を保って連結する連結部材52とを具備するもの
で、一対の背フレーム要素51間に、当該背フレーム5
1の基端51aと屈曲部位51bとの間で図4及び図6
に示す後座受取付軸53を架設することができるように
している。そして、各々の背フレーム要素51の基端5
1aを前記支持基部3の背取付軸35に回転可能に取り
付け、背フレーム要素51間に架設した後座受取付軸5
3に座受4の縦フレーム41の後部を取り付けている。
As shown in FIGS. 2 and 3, etc., the back frame 5 includes a pair of back frame elements 51 which are bent in a substantially L shape.
And a connecting member 52 for connecting the upper end vicinity portions of these back frame elements 51 with a constant gap therebetween, and between the pair of back frame elements 51, the back frame 5 is provided.
4 and FIG. 6 between the base end 51a and the bent portion 51b of FIG.
The rear seat mounting shaft 53 shown in FIG. And the base end 5 of each spine frame element 51
1a is rotatably attached to the back mounting shaft 35 of the support base 3, and is mounted between the back frame elements 51 to form a rear seat receiving mounting shaft 5
The rear portion of the vertical frame 41 of the seat bridge 4 is attached to 3.

【0022】上記の構成によって、図4に示すように、
この椅子本体1は、支持基部3の前座受取付軸34を座
受4の長孔411の後端側に位置付け背フレーム5が起
き上がった図中実線で示す状態において椅子Cに通常使
用姿勢を与え、支持基部3の前座受取付軸34を座受4
の長孔411の前端側に位置付け背フレーム5が後傾し
た図中想像線に示す状態において座受4の後端を沈み込
ませて椅子Cに安息姿勢を与え、全体としていわゆるシ
ンクロチルト機構を実現するものである。
With the above configuration, as shown in FIG.
In this chair body 1, the front seat mounting shaft 34 of the support base 3 is positioned at the rear end side of the long hole 411 of the seat 4, and the back frame 5 is raised to give the chair C a normal use posture in the state shown by the solid line in the figure. , The front seat receiving mounting shaft 34 of the support base 3 is seated 4
The seat frame 4 is positioned on the front end side of the long hole 411 and the back frame 5 is tilted backward, and the rear end of the seat support 4 is depressed to give the chair C a resting posture. It will be realized.

【0023】そして、この椅子本体1は、前記シンクロ
チルト機構の一部に反力機構Hを組み込んでロッキング
装置を構成するとともに、そのロッキングを所定位置に
固定するロッキング固定機構E及びロッキング硬さを調
整する反力調整機構Aを当該ロッキング装置の構成要素
として付加している。
In the chair body 1, a reaction force mechanism H is incorporated in a part of the synchro tilt mechanism to form a locking device, and a locking fixing mechanism E for fixing the locking at a predetermined position and a rocking hardness. The reaction force adjusting mechanism A for adjusting is added as a component of the locking device.

【0024】反力機構Hは、図4及び図6に示すよう
に、前記支持基部3の機構収納空間に後傾姿勢(略45
°)で配置され前上方端を固定リテーナH1に支持され
た一対のコイルスプリングSと、背取付軸35上にあっ
て背フレーム5の傾動動作に同期して回転する第1回転
アームH2と、この第1回転アームH2の背取付軸心か
ら偏位した位置に軸回りに取り付けた可動リテーナH3
とを具備し、この可動リテーナH3に前記コイルスプリ
ングSの後下方端を支持させて、背フレーム5の後傾動
作に伴い第1回転アームH2を介して可動リテーナH3
がコイルスプリングSを圧縮する構造になっている。な
お、図6において一対のコイルスプリングSの間にある
第1回転アームH2などは省略してある。
As shown in FIGS. 4 and 6, the reaction force mechanism H is tilted backward (approximately 45 degrees) in the mechanism accommodating space of the support base 3.
A pair of coil springs S whose upper front end is supported by a fixed retainer H1 and a first rotating arm H2 which is on the back mounting shaft 35 and rotates in synchronization with the tilting movement of the back frame 5. A movable retainer H3 mounted around the shaft at a position deviated from the spin mounting shaft center of the first rotating arm H2.
And a rear lower end of the coil spring S is supported by the movable retainer H3, and the movable retainer H3 is moved through the first rotation arm H2 in accordance with the backward tilting operation of the back frame 5.
Has a structure for compressing the coil spring S. Note that, in FIG. 6, the first rotating arm H2 and the like between the pair of coil springs S are omitted.

【0025】ロッキング位置固定機構Eは、その平面図
を図5、座受4に取り付けた状態の斜視図を図6に示す
ように、中間部よりもやや基端側を座受4に第1鉛直軸
X1回りに回転可能に取り付けた平面視扇形をなす一対
のロック板E1と、背フレーム5のロッキング動作を前
記一対のロック板E1の同期回転動作に変換する動作変
換機構E2と、ロック板E1同士を選択的に固定する操
作部E3とからなる。ロック板E1は、第1鉛直軸X1
を通る径方向断面が下向L字形をなすもので、円周上に
あって垂下した部分の集合である円筒面E1aには径方
向に開口する孔E1bが所定ピッチで円周方向の複数箇
所に亘って設けてあり、同期回転動作に伴って、各孔E
1bが両第1鉛直軸X1の軸心を結ぶ仮想直線LI1上
に次々と到来して密接に対面するものである。動作変換
機構E2は、一端を前記扇形をなすロック板E1の基端
に第2鉛直軸と水平長孔との係わり合い部X2を介して
接続し、他端を支持基部3の前座受取付軸34に係わり
合わせた剛体たる連結部材E21からなるもので、ロッ
キング動作に伴って座受4が支持基部3に対して後下方
へ移動すると、この座受4に搭載されているロック板軸
支用の第1鉛直軸X1が追従するのに対して、ロック板
E1の基端に係わり合う第2鉛直軸X2は連結部材E2
1を介して支持基部3により一定位置に保持されるた
め、結果的に座受4がロッキングにより沈み込むと、扇
形のロック板E1の円筒面E1aが第1鉛直軸X1に押
されて前記係わり合い部X2の周りを後方に旋回するよ
うになっている。操作部E3は、前記仮想直線LI1に
軸心を合致させて同軸心方向へ進退可能に配置したロッ
クピンE31と、基端を第3鉛直軸X3を介して座受4
の横フレーム42に回転可能に取り付けられ先端を水平
長孔と鉛直ピンとの係わり合い部X4を介して前記ロッ
クピンE31に接続した第2回転アームE32と、この
第2回転アームE32を前記両ロック板E1の孔E1b
に通過させる方向に押し付けるバネ要素E4と、この第
2回転アームE32を前記バネ要素E4に抗し引き戻し
て前記ロックピンE31を両ロック板E1の孔E1bか
ら抜き取る操作を行うロッキング位置調整操作レバーE
5とから構成され、ロッキング位置調整操作レバーE5
は座受4の側方の適宜位置に取り付けてある。前記バネ
要素E4と前記ロッキング位置調整操作レバーE5と
は、図5に示すワイヤE6により接続されている。
The locking position fixing mechanism E has a plan view shown in FIG. 5 and a perspective view of the state where it is attached to the seat support 4, as shown in FIG. A pair of fan-shaped lock plates E1 rotatably attached about the vertical axis X1, a motion conversion mechanism E2 for converting the locking motion of the back frame 5 into the synchronous rotary motion of the pair of lock plates E1, and a lock plate. The operation unit E3 selectively fixes E1 to each other. The lock plate E1 has a first vertical axis X1.
A radial cross section passing through is a downward L shape, and holes E1b opening in the radial direction are formed at a plurality of positions in the circumferential direction at a predetermined pitch on a cylindrical surface E1a that is a set of hanging parts on the circumference. The holes E are provided along with the synchronous rotation operation.
1b successively arrives on a virtual straight line LI1 that connects the axes of both the first vertical axes X1 and closely faces them. The motion converting mechanism E2 has one end connected to the base end of the fan-shaped lock plate E1 via the engaging portion X2 of the second vertical shaft and the horizontal elongated hole, and the other end connected to the front seat mounting shaft of the support base 3. 34, which is composed of a rigid connecting member E21 engaged with 34, and is used for the lock plate shaft support mounted on the seat support 4 when the seat support 4 moves rearward and downward with respect to the support base 3 in accordance with the locking operation. While the first vertical axis X1 of the lock plate E1 follows, the second vertical axis X2 engaged with the base end of the lock plate E1 has a connecting member E2.
Since it is held at a fixed position by the support base 3 via 1, when the seat support 4 sinks due to locking as a result, the cylindrical surface E1a of the fan-shaped lock plate E1 is pushed by the first vertical axis X1 and the engagement is performed. It is adapted to turn backward around the joint portion X2. The operation portion E3 is provided with a lock pin E31 arranged so that its axis coincides with the virtual straight line LI1 so as to be able to move forward and backward in the coaxial center direction, and a base end of the lock portion E3 via a third vertical axis X3.
Second rotation arm E32 rotatably attached to the horizontal frame 42 of which the tip is connected to the lock pin E31 through the engaging portion X4 of the horizontal elongated hole and the vertical pin, and the second rotation arm E32. Hole E1b in plate E1
And a locking element E4 for pushing the second rotating arm E32 against the spring element E4 to pull out the lock pin E31 from the holes E1b of the lock plates E1.
5 and a rocking position adjusting operation lever E5
Is attached to an appropriate position on the side of the seat support 4. The spring element E4 and the locking position adjusting operation lever E5 are connected by a wire E6 shown in FIG.

【0026】このロッキング位置固定機構Eの利点とし
ては、座受4の動きに連動させてロック板E1の外周を
より大きく振らし、この外周においてロック板E1の孔
E1bとロックピンE31との係わり合いによりロック
板E1同士を固定、ひいては座受4の動きを止めて背座
をそのロッキング位置に固定するものであるため、ロッ
ク板E1の孔E1bの間隔を比較的大きくとっても背座
のロッキング固定を比較的小刻みに行える点、第1鉛直
軸X1からロック板E1の孔E1bとロックピンE31
との係わり合いの部分までのトルクアームが当該第1鉛
直軸X1からロック板E1と連結部材E21との係わり
合い部X2までのトルクアームよりも大きいため、ロッ
クに要する力を軽減することができ、ロックピンE31
やロック板E1に剛性さえ付与すれば固定に必要な機構
自体を簡素なものにできる点、一対のロック板E1を相
互に拘束し合うことで背凭れ7のロッキング固定を行う
ため、連結部材E21以外の操作部等の要素部品を全て
座受4側に搭載することができ、座6の移動に対して操
作部を常に一定の相対位置に配置しておくことができる
点、さらには、あるロッキング状態で着座者が椅子から
離れ、反力機構Hによって背座が起き上がろうする方向
に動こうとする場合、本実施形態の構造によればロック
ピンE31がロック板E1の孔E1bからせん断方向の
押付力を受けることになるため、これによる摩擦力でロ
ックピンE31が孔E1bから抜けることが阻止され、
椅子から立ち上がっても背座が急激に起き上がることが
防止される点、そして再び着座することによって、上記
せん断方向の力が消失して改めてロック解除の操作が可
能となる点などが挙げられる。また、扇形のロック板E
1は水平面内で回転するだけであるため、薄い設計が可
能となる点、扇形のロック板E1の外周部に互いに噛み
合う歯を形成すれば、動作のズレをなくすこともできる
点なども利点として挙げられる。
The advantage of the locking position fixing mechanism E is that the outer periphery of the lock plate E1 is swung more greatly in association with the movement of the seat support 4, and the hole E1b of the lock plate E1 and the lock pin E31 are engaged in this outer periphery. The lock plates E1 are fixed to each other by the fitting, and the movement of the seat support 4 is stopped to fix the back seat at the locking position. Therefore, even if the distance between the holes E1b of the lock plate E1 is relatively large, the back seat is locked and locked. Can be performed in relatively small steps, the hole E1b of the lock plate E1 and the lock pin E31 from the first vertical axis X1.
Since the torque arm up to the engagement portion with is larger than the torque arm up to the engagement portion X2 between the first vertical axis X1 and the lock plate E1 and the connecting member E21, the force required for locking can be reduced. , Lock pin E31
The mechanism necessary for fixing can be simplified by providing rigidity to the lock plate E1 and the lock plate E1. In order to lock the backrest 7 by locking the pair of lock plates E1 to each other, the connecting member E21 In addition, it is possible to mount all the component parts such as the operation unit other than the operation unit on the side of the seat support 4 and to always arrange the operation unit at a constant relative position with respect to the movement of the seat 6. When the seated person separates from the chair in the locking state and tries to move in the direction in which the back seat is raised by the reaction force mechanism H, the lock pin E31 moves in the shearing direction from the hole E1b of the lock plate E1 according to the structure of the present embodiment. Therefore, the lock pin E31 is prevented from coming off from the hole E1b by the frictional force.
It is possible to prevent the back seat from being suddenly raised even when standing up from the chair, and to sit down again so that the force in the shearing direction disappears and the unlocking operation can be performed again. Also, a fan-shaped lock plate E
Since 1 rotates only in a horizontal plane, it is possible to design thinly, and by forming teeth that mesh with each other on the outer peripheral portion of the fan-shaped lock plate E1, it is possible to eliminate a deviation in operation. Can be mentioned.

【0027】反力調整機構Aは、図4に示すように、前
記コイルスプリングSの固定リテーナH1を、実際には
軸状のバックアップ部材A10によって当該固定位置に
保持するように構成した上で、このバックアップ部材A
10を一部に備え水平軸A11回りに回転可能な第3回
転アームA1と、この第3回転アームA1の前記水平軸
A11から偏位した位置においてその偏位方向と略直交
する方向からねじ結合させたグリップA21を有するね
じ要素A2とにより構成したもので、そのねじ要素A2
は支持基部3の前壁32を貫通して前壁32の外部に突
出し、その突出位置に当該グリップA21を配置してい
る。そして、グリップ操作を通じてねじ要素A21にね
じ送り動作を与えると、第3回転アームA1が水平軸A
11回りに回転して、バックアップ部材A10を介しリ
テーナH1のバックアップ位置を、コイルスプリングS
の圧縮力を増減させる方向に移動させ得るようにしてい
る。なお、第3回転アームA1とねじ要素A2とは、操
作位置に応じて交差角度が変化するため、ねじ要素A2
の先端に押さえ板A22を取り付け、第3回転アームA
1には部分円弧状の突起A12を形成して、この突起A
12を押さえ板A22により押し付けさせることで交差
角度が変化しても対応できるようにしている。
As shown in FIG. 4, the reaction force adjusting mechanism A is constructed such that the fixed retainer H1 of the coil spring S is actually held at the fixed position by the axial backup member A10. This backup member A
A third rotary arm A1 that includes 10 as a part and is rotatable about a horizontal axis A11, and a screw connection from a direction substantially orthogonal to the direction of deviation of the third rotary arm A1 at a position deviated from the horizontal axis A11. And a screw element A2 having a grip A21, and the screw element A2
Penetrates through the front wall 32 of the support base 3 and projects to the outside of the front wall 32, and the grip A21 is arranged at the projecting position. Then, when a screw feed operation is given to the screw element A21 through the grip operation, the third rotation arm A1 moves to the horizontal axis A1.
Rotate around 11 to move the backup position of the retainer H1 through the backup member A10 to the coil spring S.
It is possible to move in the direction of increasing or decreasing the compression force of. In addition, since the intersection angle of the third rotation arm A1 and the screw element A2 changes according to the operation position, the screw element A2
Attach the pressing plate A22 to the tip of the
1 is formed with a partial arcuate projection A12, and the projection A
By pressing 12 with the pressing plate A22, it is possible to cope with a change in the intersection angle.

【0028】この反力調整機構Aの利点としては、コイ
ルスプリングSの長手寸法内に組み込むことができるた
め、コイルスプリングSの一端側に反力調整機構を導入
する場合に比べて、反力機構Hを含め軸方向のコンパク
ト化を図ることができる点、コイルスプリングSを後傾
姿勢(この実施形態においては略45°程度の傾斜)で
配置しているため、このコイルスプリングSを収容して
いる支持基部3の前後寸法の短寸化、ひいては座6を前
後スライドさせるときの座6と支持基部3との干渉を有
効に回避して動作代を十分に確保することができる点、
このようにしても操作用のグリップA21は操作し易い
支持基部3の前壁32に配置できる点、第3回転アーム
A1の腕の長さに基づく「てこ」の作用で軽く操作でき
る点などが挙げられる。
The advantage of the reaction force adjusting mechanism A is that the reaction force adjusting mechanism A can be incorporated within the longitudinal dimension of the coil spring S. Therefore, the reaction force adjusting mechanism A is compared with the case where the reaction force adjusting mechanism is introduced at one end side of the coil spring S. Since the coil spring S can be made compact in the axial direction including H, since the coil spring S is arranged in a rearwardly inclined posture (inclination of about 45 ° in this embodiment), the coil spring S is accommodated. The front-back dimension of the supporting base 3 is shortened, and consequently, the interference between the seat 6 and the supporting base 3 when the seat 6 is slid back-and-forth can be effectively avoided, and a sufficient operating allowance can be secured.
Even in this case, the operating grip A21 can be arranged on the front wall 32 of the support base 3 which is easy to operate, and the operation can be performed lightly by the action of the "lever" based on the arm length of the third rotating arm A1. Can be mentioned.

【0029】そして、座6を座受4に取り付けるととも
に、背凭れ7を背フレーム5に取り付けて、本実施形態
の椅子Cは完成される。
Then, the seat 6 is attached to the seat support 4, and the backrest 7 is attached to the back frame 5 to complete the chair C of this embodiment.

【0030】本実施形態では、背凭れ7は、図7及び図
8に示すように、当該背凭れ7の外形を形作るロの字形
をなす弾性材製の芯材71a及びこの芯材71aを袋状
に縫製した内部に収容してなる張地71bとからなる背
凭れ本体71と、この背凭れ本体71の上部の背面に配
置された下向きコの字形をなし剛性のある素材で作られ
てなる背凭れ上部補強部材72と、この背凭れ本体71
の下端部を覆う筐体状の背凭れ下部補強部材73とを具
備する。芯材71aはその上下方向中間部よりもやや下
方位置にあってランバーサポート部71xとして機能す
る部分が前方に突出するような右側面視「く」の字形に
若干屈曲させて成形してある。さらに、背フレーム要素
51に、背凭れ上支持部511を形成している。この背
凭れ上支持部511にはピン挿通孔511aが設けてあ
り、このピン挿通孔511aを前記背凭れ上部補強部材
72の下端部72aに設けたピン挿通孔72a1に合致
させて水平ピン721を挿通し、この水平ピン721を
介して背凭れ上部補強部材72を背凭れ上支持部511
に回転可能に接続している。さらに、この背凭れ7の上
端部をなす背凭れ本体71の上方及び背凭れ上部補強部
材72には、共通の上張地72bを被せるようにしてい
る。一方、背凭れ本体71の下端部は、背凭れ下部補強
部材73の開口部に挿入して背凭れ7の下端部7xを形
成している。
In the present embodiment, as shown in FIGS. 7 and 8, the backrest 7 is a square-shaped elastic core material 71a that forms the outer shape of the backrest 7 and a bag of the core material 71a. Made of a rigid material having a backrest main body 71 formed of a stretched cloth 71b sewn into a sewn inside, and a downward U-shape disposed on the back surface of the upper portion of the backrest main body 71. Backrest upper reinforcing member 72 and this backrest main body 71
And a case-like backrest lower reinforcing member 73 that covers the lower end of the backrest. The core material 71a is slightly bent in a right side view "V" shape so that the portion functioning as the lumbar support portion 71x is located at a position slightly lower than the intermediate portion in the vertical direction and protrudes forward. Further, the back support element 511 is formed on the back frame element 51. The backrest upper support portion 511 is provided with a pin insertion hole 511a. The pin insertion hole 511a is aligned with the pin insertion hole 72a1 provided at the lower end portion 72a of the backrest upper reinforcing member 72 so that the horizontal pin 721 is attached. The backrest upper reinforcing member 72 is inserted through the horizontal pin 721 and the backrest upper support portion 511 is inserted.
Is rotatably connected to. Further, a common upholstery 72b is covered over the backrest main body 71 and the backrest upper reinforcing member 72 that form the upper end of the backrest 7. On the other hand, the lower end of the backrest body 71 is inserted into the opening of the backrest lower reinforcing member 73 to form the lower end 7x of the backrest 7.

【0031】また、座6の下方には、クランク部81と
一端部に操作部たる操作つまみ821を有するクランク
シャフト部82と一端部をクランク部81に接続したク
ランクアーム部83とを具備するクランク機構8を設け
ている。クランクアーム部83は、その他端部を背凭れ
7の下端部7xに接続し、中間部の回転中心X10を中
心に回転可能に構成して、さらにこのクランクアーム部
83により座6の後端部6yを支持するようにしてい
る。そして、前記操作つまみ821の回転操作によって
背凭れ7の下端部7xと座6の後端部6yとを連動して
昇降させるようにしている。なお、前記クランクアーム
部83は、本実施形態では左右に離間して1対設けられ
ている。
Below the seat 6, a crank having a crank portion 81, a crankshaft portion 82 having an operating knob 821 at one end portion, and a crank arm portion 83 having one end portion connected to the crank portion 81. A mechanism 8 is provided. The other end of the crank arm portion 83 is connected to the lower end portion 7x of the backrest 7 so that the crank arm portion 83 can rotate around the rotation center X10 of the intermediate portion. I try to support 6y. The lower end portion 7x of the backrest 7 and the rear end portion 6y of the seat 6 are moved up and down in association with each other by rotating the operation knob 821. In the present embodiment, a pair of the crank arm portions 83 are provided apart from each other in the left and right directions.

【0032】また、前記クランク部81の移動経路上に
このクランク部81の移動範囲を規制するストッパ85
(図8では省略)を設けている。このストッパ85の構
成を図10に示すが、このストッパ85は樹脂などで構
成された断面視略C字状をなすもので、背フレーム要素
51間に横架して設けたストッパ台板851から起立し
て設けたストッパ取付部材852に、開口部をクランク
部81の移動範囲に向けて取り付けている。
A stopper 85 for restricting the moving range of the crank portion 81 is provided on the moving path of the crank portion 81.
(Omitted in FIG. 8) is provided. The structure of the stopper 85 is shown in FIG. 10. The stopper 85 is made of resin or the like and has a substantially C-shaped cross-section. The stopper base plate 851 is provided laterally between the back frame elements 51. An opening is attached to a stopper attachment member 852 provided upright so as to face the movement range of the crank portion 81.

【0033】そして、背凭れ下部補強部材の背面にはス
ライダ86(図8では省略)が設けてあり、適当な位置
に固定して設けたガイド部材87(図8では省略)に常
に係り合わせるようにして背凭れ7の下端部7xを平行
に昇降させるようにしている。
A slider 86 (not shown in FIG. 8) is provided on the back surface of the backrest lower reinforcing member so that it is always engaged with a guide member 87 (not shown in FIG. 8) fixedly provided at an appropriate position. The lower end portion 7x of the backrest 7 is raised and lowered in parallel.

【0034】一方、背凭れ7の下端部7xには前記クラ
ンクアーム部83の一端を係り合わせる係合部材74を
設けている。一方、前記クランクアーム部83の一端部
には後方に開放された開口部83aを設けて前記係合部
材74に係り合わせているとともに、他端部には長穴8
31を設けて前記クランク部81に係り合わせている。
On the other hand, an engaging member 74 for engaging one end of the crank arm portion 83 is provided at the lower end portion 7x of the backrest 7. On the other hand, one end of the crank arm 83 is provided with an opening 83a opened rearward so as to engage with the engaging member 74, and the other end has an elongated hole 8a.
31 is provided to engage with the crank portion 81.

【0035】以下に、このように構成したクランク機構
8を用いて背凭れ7の下端部7xを図7及び図9の実線
に示す位置から想像線に示す位置まで移動させる方法を
述べる。
A method of moving the lower end portion 7x of the backrest 7 from the position shown by the solid lines in FIGS. 7 and 9 to the position shown by the imaginary lines by using the crank mechanism 8 thus constructed will be described below.

【0036】前記操作つまみ821を図7の矢印xの方
向に回転させると、図9に示すように、クランク部81
がクランクシャフト部82とともに回転し、長孔831
と前記クランク部81との係り合わせを介してクランク
アーム部83が回転する。そして、背凭れ7の下端部に
設けた係合部材74が前記クランクアーム部83の開口
部83aに持ち上げられて背凭れ7の下端部7xが図9
の実線に示す位置から想像線に示す位置まで上昇し、ク
ランクアーム部83の上面83bがカムの役割を果たし
て座6の後端部6yが背凭れ7の下端部7xと連動して
図9の実線に示す位置から想像線に示す位置まで上昇す
る。そして、ストッパ85が径過的に押し開かれてこの
ストッパ85にクランク部81が収容されて保持され、
背凭れ7の下端部7x及び座6の後端部6yが図9の想
像線に示す位置を保つ。
When the operating knob 821 is rotated in the direction of arrow x in FIG. 7, the crank portion 81 is rotated as shown in FIG.
Rotates with the crankshaft portion 82, and the long hole 831
The crank arm portion 83 rotates through the engagement between the crank arm portion 81 and the crank portion 81. The engaging member 74 provided at the lower end of the backrest 7 is lifted up to the opening 83a of the crank arm portion 83, and the lower end 7x of the backrest 7 is shown in FIG.
9 from the position indicated by the solid line to the position indicated by the imaginary line, the upper surface 83b of the crank arm portion 83 functions as a cam, and the rear end portion 6y of the seat 6 interlocks with the lower end portion 7x of the backrest 7 of FIG. Ascend from the position shown by the solid line to the position shown by the imaginary line. Then, the stopper 85 is excessively pushed open, and the crank portion 81 is accommodated and held in the stopper 85,
The lower end portion 7x of the backrest 7 and the rear end portion 6y of the seat 6 maintain the position shown by the imaginary line in FIG.

【0037】一方、背凭れ7の下端部7xが上昇する
と、ランバーサポート部71xとして機能する部分が突
き上げられて、背凭れ7は図7の実線で示す形状から想
像線で示す形状に変形する。
On the other hand, when the lower end portion 7x of the backrest 7 rises, the portion functioning as the lumbar support portion 71x is pushed up, and the backrest 7 is deformed from the shape shown by the solid line in FIG. 7 to the shape shown by the imaginary line.

【0038】また、逆の操作を行うと、背凭れ7の下端
部7xは図7及び図9の想像線に示す位置から実線に示
す位置に戻り、これに連動して座6の後端部6y及び背
凭れ7の形状も図7及び図9の想像線に示す位置から実
線に示す位置に戻る。
When the reverse operation is performed, the lower end 7x of the backrest 7 returns from the position shown by the imaginary line in FIGS. 7 and 9 to the position shown by the solid line, and in conjunction with this, the rear end of the seat 6 is interlocked. The shapes of 6y and the backrest 7 also return from the positions shown by the imaginary lines in FIGS. 7 and 9 to the positions shown by the solid lines.

【0039】しかして、本実施形態では、座6の下方に
椅子本体1の幅方向に延びる細長い板状の操作板9を設
け、座6の前後移動に伴って操作板9を前後に移動し得
るように構成するとともに、操作板9を椅子本体1の幅
方向に移動させて座6を所定位置にロックし、またロッ
クを解除し得るように構成している。
However, in this embodiment, an elongated plate-like operation plate 9 extending in the width direction of the chair body 1 is provided below the seat 6, and the operation plate 9 is moved back and forth as the seat 6 moves back and forth. The operation plate 9 is moved in the width direction of the chair body 1 to lock the seat 6 at a predetermined position, and the lock can be released.

【0040】具体的には、座6、座受4、及び操作板9
を示す底面側からの斜視図を図11、同分解斜視図を図
12、概略平面図を図13にそれぞれ示すように、操作
板9は、一端部を下方に屈曲させて操作部9aを設けた
椅子の幅方向に延びる細長い板状の部材であり、他端部
に噛み合いに必要な形状を有する係合部9xを設定して
いる。この係合部9xは、操作板9の一端面に係合歯9
bを形成してなるものである。さらに、座6の底面には
操作板9を収納する操作板収納溝M1を設けてこの操作
板9を収納するようにし、操作板9の底面と座6の底面
とが略面一になるようにしている。いっぽう、椅子本体
1を構成する座受4の上面には、前記係合部9xが噛み
合うことのできる形状を有する被係合部たるロック板4
4を固定して設けてある。すなわち、椅子本体1側に被
係合部を固定して設けてある。このロック板44は、前
後方向に延びる細長い板状をなすものであり、前記操作
板9の係合歯9bと対向する面に被係合歯44aを形成
してなるものである。座6の底面にはロック板収納溝M
2を設けてあり、座6を座受4に載せ置いた際にロック
板44が収納されるようにしてある。なお、前記操作板
収納溝M1とこのロック板収納溝M2とは、T字形を形
成しており、前記ロック板収納溝M2の中央部から前記
操作板収納溝M1が直交方向に延びている。さらに詳述
すると、前記操作板9には、長孔9cが設けてあり、座
6に固定した操作板移動ガイドピン68と係り合わせて
この操作板9を椅子Cの幅方向にのみ移動可能にしてい
る。前記操作板移動ガイドピン68は、本実施形態では
先端部に雄ねじ部を設け、座に設けた雌ねじ孔HL1に
ねじ止めするようにしている。さらに、この操作板9に
はばね収納部9dを設け、ばね91をこのばね収納部9
dに取り付けて、ばね91の弾力により操作板がロック
板44に向けて押されるようにして、操作板9の係合歯
9bとロック板44の被係合歯44aとが密接して噛み
合うようにしている。そして、座受4の縦フレーム41
には前後移動ガイド長孔41aが設けてあり、座6に固
定した突起たる前後移動ガイドピン69と係り合わせて
座6を図13の実線に示す後方位置BKと図13の想像
線に示す前方位置FWとの間で移動可能にしている。前
記前後移動ガイドピン69は、本実施形態では先端部に
雄ねじ部を設け、座に設けた雌ねじ孔HL2にねじ止め
するようにしている。なお、図13において、座6は輪
郭のみを示している。
Specifically, the seat 6, the seat support 4, and the operation plate 9
11, a disassembled perspective view is shown in FIG. 12, and a schematic plan view is shown in FIG. 13, the operation plate 9 is provided with an operation portion 9a by bending one end downward. It is an elongated plate-shaped member extending in the width direction of the chair, and has an engaging portion 9x having a shape required for engagement at the other end. This engaging portion 9x is provided with an engaging tooth 9 on one end surface of the operation plate 9.
b is formed. Further, an operation plate storage groove M1 for accommodating the operation plate 9 is provided on the bottom surface of the seat 6 so as to accommodate the operation plate 9, so that the bottom surface of the operation plate 9 and the bottom surface of the seat 6 are substantially flush with each other. I have to. On the other hand, on the upper surface of the seat support 4 which constitutes the chair body 1, the lock plate 4 which is an engaged portion having a shape capable of engaging with the engaging portion 9x.
4 is fixedly provided. That is, the engaged portion is fixedly provided on the chair body 1 side. The lock plate 44 has an elongated plate shape extending in the front-rear direction, and has engaged teeth 44a formed on a surface of the operation plate 9 facing the engaging teeth 9b. A lock plate storage groove M is provided on the bottom surface of the seat 6.
2 is provided so that the lock plate 44 is accommodated when the seat 6 is placed on the seat support 4. The operation plate storage groove M1 and the lock plate storage groove M2 form a T shape, and the operation plate storage groove M1 extends in the orthogonal direction from the central portion of the lock plate storage groove M2. More specifically, the operation plate 9 is provided with a long hole 9c, and the operation plate 9 can be moved only in the width direction of the chair C by engaging with the operation plate movement guide pin 68 fixed to the seat 6. ing. In the present embodiment, the operation plate movement guide pin 68 is provided with a male screw portion at its tip end and is screwed into the female screw hole HL1 provided in the seat. Further, a spring accommodating portion 9d is provided on the operation plate 9, and the spring 91 is attached to the spring accommodating portion 9d.
The operation plate is attached to the lock plate 44 by the elastic force of the spring 91 so that the engagement teeth 9b of the operation plate 9 and the engaged teeth 44a of the lock plate 44 closely mesh with each other. I have to. And, the vertical frame 41 of the seat 4
The front and rear movement guide elongated hole 41a is provided in the front side of the seat 6, and the front and rear movement guide pins 69 that are fixed to the seat 6 are engaged with the rear side position BK shown by the solid line in FIG. 13 and the front side shown by the imaginary line in FIG. It is movable to and from the position FW. In the present embodiment, the forward-backward movement guide pin 69 is provided with a male screw portion at its tip end and is screwed into a female screw hole HL2 provided in the seat. Note that, in FIG. 13, the seat 6 shows only the contour.

【0041】このように構成した操作板9を用いて座6
を前後に移動させる方法を以下に述べる。
The seat 6 is constructed by using the operation plate 9 thus constructed.
The method of moving the back and forth will be described below.

【0042】まず、操作部9aを引いて操作板9をロッ
ク板44から離す。すると、操作板の係合歯9bとロッ
ク板44の被係合歯44aとが噛み合った状態が解除さ
れ、座6が前後方向に移動できるようになる。そして、
操作板9を引いたまま座6を好みの前後位置に移動させ
て、操作板9から手を離す。すると、ばね91の作用に
より操作板9がロック板44の方向に押されて、操作板
9の係合歯9bとロック板44の被係合歯44aとが噛
み合い、座6の前後位置がロックされる。
First, the operating portion 9a is pulled to separate the operating plate 9 from the lock plate 44. Then, the state in which the engagement tooth 9b of the operation plate and the engaged tooth 44a of the lock plate 44 are released from each other is released, and the seat 6 can move in the front-rear direction. And
With the operation plate 9 pulled, the seat 6 is moved to a desired front-back position, and the operation plate 9 is released. Then, the operation plate 9 is pushed in the direction of the lock plate 44 by the action of the spring 91, the engaging tooth 9b of the operation plate 9 and the engaged tooth 44a of the lock plate 44 mesh, and the front and rear position of the seat 6 is locked. To be done.

【0043】このように、座6の前後位置のロックに板
状の操作板9を用いているので、肉薄のものにでき、ス
ペースを節約できる。
Since the plate-shaped operation plate 9 is used to lock the seat 6 in the front-rear position, the thickness can be reduced and the space can be saved.

【0044】特に、本実施形態では操作板9の一端に係
合部9xを設け、固定側の座受4にこの係合部9xと噛
み合うことのできる形状を有する被係合部たるロック板
44を固定して設けているので、より簡単な構成でロッ
ク機構を実現できる。
In particular, in the present embodiment, an engaging portion 9x is provided at one end of the operating plate 9, and the lock plate 44, which is an engaged portion having a shape capable of meshing with the engaging portion 9x, is provided on the fixed-side seat support 4. Since it is fixedly provided, the lock mechanism can be realized with a simpler configuration.

【0045】また、係合部9xに係合歯9bを形成し、
被係合部たるロック板44に被係合歯44aにより構成
しているので、歯を多数設け、ロック強度を確保しつつ
固定位置を多段階に設定できる。
Further, engaging teeth 9b are formed on the engaging portion 9x,
Since the lock plate 44, which is the engaged portion, is composed of the engaged teeth 44a, it is possible to provide a large number of teeth and set the fixing position in multiple stages while ensuring the lock strength.

【0046】さらに、座6を座受4に載せ置くように構
成しているので、上載荷重により座の前後スライドをよ
り確実にロックでき、加えて、ロック板44を座受4の
上面に固定して設けているので、簡単な構成で係合歯9
bと被係合歯44aとの噛み合わせを実現することがで
きる。
Furthermore, since the seat 6 is constructed so as to be placed on the seat support 4, the front and rear slides of the seat can be more reliably locked by the loading load, and in addition, the lock plate 44 is fixed to the upper surface of the seat support 4. Since it is provided with a simple structure, the engaging teeth 9
It is possible to realize the engagement between the b and the engaged tooth 44a.

【0047】また、座6の下面に溝M1を設けて操作板
9を収納しているので、座6と座受4との間に無駄なス
ペースが発生せず、見た目をすっきりできる。
Further, since the operation plate 9 is accommodated by providing the groove M1 on the lower surface of the seat 6, no wasteful space is generated between the seat 6 and the seat support 4, and the appearance can be made clean.

【0048】そして、ばね91の弾性力により操作板9
の歯9bとロック板44の歯44aとが密着するように
しているので、操作板9に力を加えない状態でも効果的
に座6の前後位置をロックしたままにしておくことがで
きる。
The elastic force of the spring 91 causes the operating plate 9
Since the teeth 9b of the lock plate 44 and the teeth 44a of the lock plate 44 are in close contact with each other, the front and rear positions of the seat 6 can be effectively kept locked even when no force is applied to the operation plate 9.

【0049】なお、本発明は以上に述べた実施形態に限
られない。
The present invention is not limited to the embodiment described above.

【0050】例えば、被係合部を、座受の縦フレームの
内面に設ける等、他の形状にしてもよい。
For example, the engaged portion may be provided in another shape such as being provided on the inner surface of the vertical frame of the seat support.

【0051】また、弾性力を用いる代わりに、操作板固
定棒を操作板に設けた固定孔に挿し通す等の方法を用い
て操作板が力を加えない状態で移動しないようにしても
よい。
Further, instead of using the elastic force, the operation plate fixing rod may be inserted into a fixing hole provided in the operation plate so that the operation plate does not move without applying a force.

【0052】さらに、座の下面に溝を設けないようにし
てももちろんよい。その場合、座受の縦フレームの一方
に操作板挿通孔を設けてこの操作板を挿し通すようにす
るとともに、他方の縦フレームの前記操作板と対向する
位置に被係合部を設けるような構成等が考えられる。
Further, it is of course possible that no groove is provided on the lower surface of the seat. In this case, an operation plate insertion hole is provided in one of the vertical frames of the seat support so that this operation plate can be inserted therethrough, and an engaged portion is provided at a position facing the operation plate of the other vertical frame. The configuration etc. can be considered.

【0053】そして、係合部と被係合部は、係合部と被
係合部とが噛み合わせ可能であれば、同一形状の歯同士
の噛み合わせ以外の構造を用いて構成しても強度を確保
しつつピッチを小さくできる効果は得られる。
If the engaging portion and the engaged portion can be engaged with each other, the engaging portion and the engaged portion may be constructed by using a structure other than the engagement of teeth having the same shape. The effect that the pitch can be reduced while securing the strength can be obtained.

【0054】加えて、操作板の一端部を下方に屈曲させ
て操作部を形成する代わりに、部品点数は多くなるが、
操作を行うためのグリップを別に取り付けるようにして
ももちろんよい。
In addition, instead of bending one end of the operation plate downward to form the operation part, the number of parts increases, but
Of course, a grip for performing the operation may be attached separately.

【0055】その他の構成も、本発明の趣旨を逸脱しな
い範囲で種々変形が可能である。
Other configurations can be variously modified without departing from the spirit of the present invention.

【0056】例えば、図14は変形例としての反力調整
機構Fを示している。この反力調整機構Fは、コイルス
プリングSの固定リテーナH1を軸状のバックアップ部
材F10によって当該固定位置に保持するように構成し
た上で、このバックアップ部材F10を一部に備え鉛直
軸F11回りに回転可能な回転アームF1と、この回転
アームF1の前記鉛直軸F11から偏位した位置におい
てその偏位方向と略直交する方向からねじ結合させたグ
リップF21を有するねじ要素F2とにより構成したも
ので、そのねじ要素F2は支持基部3の側壁33を貫通
して側壁33の外側方に突出し、その突出位置に当該グ
リップF21を配置している。そして、グリップ操作を
通じてねじ要素F21にねじ送り動作を与えると、回転
アームF1が鉛直軸F11回りに回転して、バックアッ
プ部材F10を介しリテーナH1のバックアップ位置
を、コイルスプリングSの初期圧縮量を増減させる方向
に移動させ得るようにしているものである。
For example, FIG. 14 shows a reaction force adjusting mechanism F as a modified example. The reaction force adjusting mechanism F is configured such that the fixed retainer H1 of the coil spring S is held at the fixed position by a shaft-shaped backup member F10, and the backup member F10 is partially provided around the vertical axis F11. It is composed of a rotatable rotary arm F1 and a screw element F2 having a grip F21 screwed in a position displaced from the vertical axis F11 of the rotary arm F1 in a direction substantially orthogonal to the displacement direction. The screw element F2 penetrates the side wall 33 of the support base 3 and protrudes outward of the side wall 33, and the grip F21 is arranged at the protruding position. When a screw feed operation is applied to the screw element F21 through the grip operation, the rotating arm F1 rotates around the vertical axis F11, and the backup position of the retainer H1 is increased or decreased by increasing or decreasing the initial compression amount of the coil spring S via the backup member F10. It is designed so that it can be moved in the direction in which it is caused.

【0057】このように構成すると、支持基部3の底壁
31と直交する方向の嵩張りが抑えられるので、支持基
部3及びその周辺の薄肉化を有効に追求することが可能
となる。
According to this structure, since the bulkiness of the support base 3 in the direction orthogonal to the bottom wall 31 is suppressed, it is possible to effectively pursue the thinning of the support base 3 and its periphery.

【0058】[0058]

【発明の効果】本発明は、以上に詳述したように、座を
前後方向に移動可能に構成した椅子において、細長い板
状をなす操作板を用いて座の前後位置のロックを行うよ
うにしているので、厚さ方向のスペースを節約すること
ができ、例えばロック機構を座と座受との間に収納して
外観をすっきりさせること等が可能になる。
As described in detail above, according to the present invention, in a chair in which the seat is movable in the front-rear direction, the front-back position of the seat is locked by using an operation plate having an elongated plate shape. Therefore, the space in the thickness direction can be saved, and for example, the lock mechanism can be housed between the seat and the seat support to have a neat appearance.

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

【図1】本発明の一実施形態に係る椅子の正面図。FIG. 1 is a front view of a chair according to an embodiment of the present invention.

【図2】同実施形態に係る椅子の側面図。FIG. 2 is a side view of the chair according to the embodiment.

【図3】同実施形態に係る椅子の背面図。FIG. 3 is a rear view of the chair according to the embodiment.

【図4】同実施形態に係る椅子の支持基部付近を示す縦
断面図。
FIG. 4 is a vertical cross-sectional view showing the vicinity of a support base of the chair according to the same embodiment.

【図5】同実施形態に係る椅子の座受を示す平面図。FIG. 5 is a plan view showing a seat support of the chair according to the embodiment.

【図6】同実施形態に係る椅子の座受を支持基部に取り
付けた状態を示す斜視図。
FIG. 6 is a perspective view showing a state in which the seat support of the chair according to the embodiment is attached to the support base.

【図7】同実施形態に係る椅子の背凭れの機構及び動作
を示す概念図。
FIG. 7 is a conceptual diagram showing the mechanism and operation of the backrest of the chair according to the same embodiment.

【図8】同実施形態に係る椅子の背凭れの構造を示す分
解斜視図。
FIG. 8 is an exploded perspective view showing the structure of the backrest of the chair according to the embodiment.

【図9】同実施形態に係る椅子のクランク機構を示す概
略図。
FIG. 9 is a schematic view showing a crank mechanism of the chair according to the embodiment.

【図10】同実施形態に係る椅子のクランク機構のスト
ッパを示す概略図。
FIG. 10 is a schematic diagram showing a stopper of the crank mechanism of the chair according to the embodiment.

【図11】同実施形態に係る椅子の座と座受けの接続部
分の構造を示す底面斜視図。
FIG. 11 is a bottom perspective view showing the structure of the connecting portion between the seat and the seat support of the chair according to the embodiment.

【図12】同実施形態に係る椅子の座と座受けの接続部
分を示す分解斜視図。
FIG. 12 is an exploded perspective view showing a connection portion between a seat and a seat of the chair according to the same embodiment.

【図13】同実施形態に係る椅子の座の前後への移動及
びロックを示す概略図。
FIG. 13 is a schematic diagram showing front and rear movement and locking of a seat of the chair according to the embodiment.

【図14】本発明に係る椅子のさらに別の実施態様を示
す図。
FIG. 14 is a view showing still another embodiment of the chair according to the present invention.

【符号の説明】[Explanation of symbols]

C…椅子 4…座受 41a…前後移動ガイド長孔(長孔) 6…座 6y…座の後端部 69…前後移動ガイドピン(突起) 7…背凭れ 7x…背もたれの下端部 71x…ランバーサポート部 9…操作板 9x…係合部 9a…操作部 9b…係合歯(歯) 44…ロック板(被係合部) 44a…被係合歯(歯) M1…操作板収納溝(溝) C ... Chair 4 ... Seating 41a ... Longitudinal movement guide long hole (long hole) 6 ... 6y ... rear end of seat 69 ... Forward / backward movement guide pin (projection) 7. Backrest 7x ... Lower end of backrest 71x ... Lumber support section 9 ... Operation board 9x ... Engagement part 9a ... Operation unit 9b ... Engaging tooth (tooth) 44 ... Lock plate (engaged part) 44a ... Engaged tooth (tooth) M1 ... Operation plate storage groove (groove)

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3B091 AA04 AA05 AB02 AC06 3B099 AA02 BA08 CA01    ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3B091 AA04 AA05 AB02 AC06                 3B099 AA02 BA08 CA01

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】座の下方に椅子本体の幅方向に延びる板状
の操作板を設け、座の前後移動に伴って操作板を前後に
移動し得るように構成するとともに、操作板を椅子本体
の幅方向に移動させて座を所定位置にロックし、またロ
ックを解除し得るように構成していることを特徴とする
椅子。
1. A plate-like operation plate extending in the width direction of the chair body is provided below the seat so that the operation plate can be moved back and forth as the seat moves back and forth. A chair characterized in that it is configured so that it can be moved in the width direction to lock the seat in a predetermined position and can be unlocked.
【請求項2】操作板に噛み合いに必要な形状を有する係
合部を設けるとともに、椅子本体側に前記係合部が噛み
合うことのできる形状を有する被係合部を設け、前記係
合部と前記被係合部とを噛み合わせて座を所定位置にロ
ックし得るように構成していることを特徴とする請求項
1記載の椅子。
2. An operating portion is provided with an engaging portion having a shape required for engagement, and an engaged portion having a shape capable of engaging with the engaging portion is provided on the chair body side, and the engaging portion is provided with the engaging portion. The chair according to claim 1, wherein the seat is configured to be locked at a predetermined position by engaging with the engaged portion.
【請求項3】係合部がその操作板の一端に歯を形成して
なるものであり、被係合部が椅子本体側の対面位置に同
様の歯を形成してなるものであることを特徴とする請求
項2記載の椅子。
3. The engaging portion is formed by forming teeth on one end of the operation plate, and the engaged portion is formed by forming similar teeth at a facing position on the chair body side. The chair according to claim 2, wherein the chair is a chair.
【請求項4】座を座受に載せ置くように構成していると
ともに、前記被係合部を一端縁に歯を設けた細長い板状
の部材を用いて形成し、この被係合部を座受と座の間に
介在させていることを特徴とする請求項3記載の椅子。
4. The seat is configured to be placed on a seat support, and the engaged portion is formed by using an elongated plate-like member having teeth at one end edge thereof. The chair according to claim 3, wherein the chair is interposed between the seat support and the seat.
【請求項5】弾性力により前記係合部と前記被係合部と
が密着ないし略密着するように構成していることを特徴
とする請求項1、2、3、又は4記載の椅子。
5. The chair according to claim 1, wherein the engaging portion and the engaged portion are in close contact or substantially in close contact with each other by elastic force.
【請求項6】座の下面に操作板を収納する溝を設けてい
ることを特徴とする請求項1、2、3、4、又は5記載
の椅子。
6. The chair according to claim 1, wherein a groove for accommodating the operation plate is provided on the lower surface of the seat.
【請求項7】座を座受に載せ置くように構成していると
ともに、座受に前後方向に延びる長孔を設け、座に固定
した突起をこの長孔に係り合せていることを特徴とする
請求項1、2、3、4、5、又は6記載の椅子。
7. The seat is configured to be placed on the seat support, the seat support is provided with an elongated hole extending in the front-rear direction, and a projection fixed to the seat is engaged with the elongated hole. The chair according to claim 1, 2, 3, 4, 5, or 6.
【請求項8】操作板の一端部を下方に屈曲させて操作部
を形成していることを特徴とする請求項1、2、3、
4、5、6、又は7記載の椅子。
8. An operating portion is formed by bending one end portion of the operating plate downward.
The chair according to 4, 5, 6, or 7.
JP2002089550A 2002-03-27 2002-03-27 Chair Expired - Fee Related JP4060621B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002089550A JP4060621B2 (en) 2002-03-27 2002-03-27 Chair

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002089550A JP4060621B2 (en) 2002-03-27 2002-03-27 Chair

Publications (2)

Publication Number Publication Date
JP2003284619A true JP2003284619A (en) 2003-10-07
JP4060621B2 JP4060621B2 (en) 2008-03-12

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007130341A (en) * 2005-11-11 2007-05-31 Kokuyo Furniture Co Ltd Chair
JP2007135625A (en) * 2005-11-14 2007-06-07 Okamura Corp Reclining chair
JP2010094362A (en) * 2008-10-17 2010-04-30 Okamura Corp Chair
JP2010094364A (en) * 2008-10-17 2010-04-30 Okamura Corp Chair

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007130341A (en) * 2005-11-11 2007-05-31 Kokuyo Furniture Co Ltd Chair
JP4721182B2 (en) * 2005-11-11 2011-07-13 コクヨ株式会社 Chair
JP2007135625A (en) * 2005-11-14 2007-06-07 Okamura Corp Reclining chair
JP2010094362A (en) * 2008-10-17 2010-04-30 Okamura Corp Chair
JP2010094364A (en) * 2008-10-17 2010-04-30 Okamura Corp Chair

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