JPH0515793Y2 - - Google Patents

Description

【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、椅子における座板と背凭とが同時に
傾動可能な傾動装置において、当該傾動を規制で
きる装置の構造に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a structure of a tilting device capable of regulating the tilting of a seat and backrest of a chair that can be tilted simultaneously.

〔従来の技術とその解決すべき課題〕[Conventional technology and issues to be solved]

事務用等の椅子における座板の後方に設ける背
凭を前後動できると共に、その前後動の適当な位
置で固定できるロツク装置として、特公昭50−
11306号公報では、脚体上端の上面開放箱型の支
持枠上に座板を固着し、該支持枠内にて前端を枢
支した背凭支持体に背凭支杆の根本部を後向きに
取付けて後向きに突出させると共に該背凭支持体
をばね体にて上向き回動付勢し、支持枠の左右両
側板には、中途部のクランク状の係止部が前記背
凭支持体の下面に接当し得る操作軸を回動自在に
軸装し、この操作軸を座板の下方の側方に位置す
る把手にて回動することにより、背凭が略垂直に
起立した状態と後傾した状態とに選択的にロツク
できる構成が開示されている。 A locking device was developed in 1975 as a locking device that could move the backrest installed behind the seat of an office chair back and forth and fix it at an appropriate position during the back and forth movement.
In Publication No. 11306, a seat plate is fixed on a box-shaped support frame with an open upper surface at the upper end of the leg body, and the root part of the backrest support rod is attached to a backrest support body whose front end is pivoted within the support frame so that the root part of the backrest support rod faces backward. The backrest support is attached and projected rearward, and the backrest support is urged to rotate upward by a spring body, and a crank-shaped locking part in the middle of the left and right side plates of the support frame is attached to the lower surface of the backrest support. An operating shaft that can come into contact with the backrest is rotatably mounted, and this operating shaft is rotated by a handle located on the lower side of the seat plate. A configuration is disclosed that can be selectively locked into a tilted position.

この先行技術では、クランク状の係止部が背凭
支持体の下面に接当した状態で背凭に後向き荷重
（体重）が掛かると、前記クランク状の係止部両
端の操作軸には、支持枠側面との間でせん断力が
作用するので、この力に耐えるように当該操作軸
を太くし、且つ支持枠側板も厚くする必要があつ
た。 In this prior art, when a rearward load (weight) is applied to the backrest with the crank-shaped locking part in contact with the lower surface of the backrest support, the operating shafts at both ends of the crank-shaped locking part are Since a shearing force acts between the shaft and the side surface of the support frame, it was necessary to make the operating shaft thicker and to make the side plate of the support frame thicker so as to withstand this force.

また、特公昭62−57325号公報では、脚部上端
の支持枠に対して座板と背凭とをガススプリング
が組み込まれた傾動機構にて連動して後傾動でき
るいわゆるロツキング可能に構成した椅子におい
て、このガススプリングを操作するグリツプを座
板下面に取付くＵ字状のストツパに係止させるこ
とにより、ガススプリングをロツク状態に保持
し、もつて座板及び背凭の傾動状態をロツクする
構成が開示されている。 In addition, Japanese Patent Publication No. 62-57325 discloses a so-called rocking chair in which the seat plate and backrest are interlocked and tilted backward relative to the support frame at the upper end of the legs using a tilting mechanism incorporating a gas spring. By locking the grip that operates this gas spring with a U-shaped stopper attached to the underside of the seat plate, the gas spring is held in a locked state, thereby locking the tilting state of the seat plate and backrest. The configuration is disclosed.

この先行技術では、傾動機構にガススプリング
を必要とするから、コストが掛かり過ぎるという
問題があつた。また、傾動機構にガススプリング
が関連しているので、背凭に一定程度の力が掛か
ると、ある程度までさらに後傾するので、全く後
傾動させないためには別途ロツク装置が必要であ
る。 This prior art requires a gas spring for the tilting mechanism, which poses a problem of high cost. Furthermore, since a gas spring is associated with the tilting mechanism, if a certain amount of force is applied to the backrest, it will tilt further backward to a certain extent, so a separate locking device is required to prevent it from tilting backwards at all.

本考案は、これらの問題を解決し、簡単な構造
で背凭を後傾しないようにロツクできる装置を提
供するものである。 The present invention solves these problems and provides a device that has a simple structure and can lock the backrest so that it does not tilt backwards.

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

そのため、本考案は、椅子の脚体に支持された
支持枠の前寄り位置に、上面に座板が取付く座受
体の前端を枢軸を介して上下回動自在に連結し、
前記座受体の後端がピン連結された背凭支持体
を、前記支持枠の左右両側板に穿設した前後長溝
孔に挿通したスライド軸に回動自在に連結し、前
記支持枠内に配設した付勢手段にて前記スライド
軸が後退するように付勢する一方、該スライド軸
と一体的に前後動する可動体を支持枠内に配設
し、前記支持枠の外側からの操作杆の進退移動ま
たは回動移動にて、当該操作杆の先端部に設けた
ストツパ体を、前記可動体の前方に臨ませて、当
該可動体の前進動を規制するように構成したした
ものである。 Therefore, in the present invention, the front end of the seat support, on which the seat plate is attached to the upper surface, is connected to the front side of the support frame supported by the legs of the chair via a pivot shaft so as to be movable up and down.
A backrest support body to which the rear end of the seat support is connected with a pin is rotatably connected to a slide shaft inserted into a front and rear elongated slot bored in the left and right side plates of the support frame, and A movable body that moves back and forth integrally with the slide shaft is disposed within a support frame, and is operated from outside of the support frame while urging the slide shaft to retreat by a disposed biasing means. The stopper body provided at the tip of the operating rod is configured to face forward of the movable body and restrict the forward movement of the movable body when the rod moves forward and backward or rotates. be.

〔考案の作用及び効果〕[Functions and effects of the invention]

この構成によれば、座板に腰掛ける人の荷重に
よつて座受体に下向きの荷重が掛かると、背凭支
持体とのピン連結部分を介して当該背凭支持体に
設けたスライド軸が付勢手段の付勢力に抗して若
干向き移動し、座受体はその前端の枢軸を中心に
その後部がある程度後下向きに傾動し、さらに背
凭に後向きの荷重が掛かると、付勢力に抗して前
記スライド軸はさらに前進し、可動体も前進し得
る。 According to this configuration, when a downward load is applied to the seat support due to the load of a person sitting on the seat plate, the slide shaft provided on the backrest support moves through the pin connection part with the backrest support. It moves slightly in the direction against the biasing force of the biasing means, and the rear part of the seat support tilts backward and downward to some extent around the pivot at its front end, and when a rearward load is further applied to the backrest, the biasing force Against this, the slide shaft can move further forward, and the movable body can also move forward.

このように前記付勢手段による力とバランスし
て背凭支持体と連動して座受体も後傾し、反対に
背凭への力が少なくなると略水平状に戻るという
所謂揺り椅子にすることができる。 In this way, the seat receiver also tilts backward in conjunction with the backrest support in balance with the force exerted by the urging means, and conversely returns to a substantially horizontal position when the force on the backrest decreases, making it a so-called rocking chair. I can do it.

そして、事務作業中は座る人の荷重が座板の前
寄り位置に来ることが多いと共に、座る人の荷重
の掛かり方如何で座板が後傾するような揺動は好
ましくない。 Furthermore, during office work, the weight of the person sitting on the seat often falls towards the front of the seat, and depending on the way the weight of the person sitting on the seat is applied, it is not desirable for the seat to rock in such a way that it tilts backward.

このような場合には、操作杆を支持枠に対して
進退移動または回動移動させると、当該操作杆の
先端部に設けたストツパ体が、前記可動体の前方
に位置することになり、このストツパ体にて可動
体の前進を阻止することにより、可動体ひいては
スライド軸が前向き移動しないから、座受体が略
水平状等の予め定められた姿勢で固定され、座板
及び背凭の姿勢を固定するいわゆるロツク状態に
できるのである。 In such a case, when the operating rod is moved back and forth or rotated with respect to the support frame, the stopper body provided at the tip of the operating rod will be located in front of the movable body, and this By preventing the movable body from moving forward with the stopper body, the movable body and the slide shaft will not move forward, so the seat support body will be fixed in a predetermined posture such as approximately horizontal, and the posture of the seat plate and backrest will be fixed. It is possible to create a so-called lock state in which it is fixed.

このように、本考案によれば、前後移動可能な
スライド軸と一体的に移動する可動体の前進を止
めるか止めないかの選択を、支持枠に対する操作
杆の進退移動または回動移動、ひいてはストツパ
体の簡単な移動により至極簡単に実行できるもの
である。 As described above, according to the present invention, the selection of whether to stop or not to stop the forward movement of the movable body that moves integrally with the slide shaft that can move forward and backward can be made by moving the operating rod forward and backward with respect to the support frame, or by turning it. This can be carried out extremely easily by simply moving the stopper body.

しかも、スライド軸に取付ける可動体とこの動
きを阻止するストツパ体及びその操作杆の付加だ
けであるから、必要部材の点数も少なく、椅子の
構造を簡単化するのに貢献できる。 Moreover, since only the movable body attached to the slide shaft, the stopper body for blocking this movement, and its operating rod are added, the number of required members is small, contributing to simplifying the structure of the chair.

そして、支持枠における規制部と可動体の前面
との間にストツパ体を介在させるように構成すれ
ば、当該ストツパ体には圧縮力だけが掛かるの
で、当該ストツパ体の形状や材料の設計上の選択
幅も大きくなり、設計上の自由度も大幅に改善さ
れる。 If the stopper body is interposed between the regulating part of the support frame and the front surface of the movable body, only compressive force will be applied to the stopper body, so the design of the shape and material of the stopper body will The range of selection is widened, and the degree of freedom in design is greatly improved.

〔実施例〕〔Example〕

次に実施例について説明すると、図において椅
子１は、筒状支柱２ａ下端から放射状に突出する
複数の足部２ｂに各々キヤスタ３を備え、筒状支
柱２ａ内にガススプリング４を内蔵した脚体２
と、該ガススプリング４の上端を固着した上面開
放状箱型の支持枠５と、該支持枠５の上面に配設
する座受体６と、上端に背凭７が取付く側面視Ｌ
字状の背凭支持体８とから成る。 Next, an embodiment will be described. In the figure, a chair 1 is equipped with a caster 3 on each of a plurality of legs 2b projecting radially from the lower end of a cylindrical support 2a, and a leg body with a built-in gas spring 4 inside the cylindrical support 2a. 2
, a support frame 5 with an open top box shape to which the upper end of the gas spring 4 is fixed, a seat support 6 disposed on the upper surface of the support frame 5, and a backrest 7 attached to the upper end in a side view L.
It consists of a letter-shaped backrest support 8.

前記座受体６はその前端を支持枠５の前部寄り
位置に枢軸９を介して枢着され、座受体６上面に
載置固定されたクツシヨン入り座板１０の前端は
前記支持枠５の前端前向き突出するフランジ部１
１に固定される。 The front end of the seat support 6 is pivoted to a position near the front of the support frame 5 via a pivot 9, and the front end of the cushion-containing seat plate 10 placed and fixed on the upper surface of the seat support 6 is connected to the support frame 5. The front end of the flange portion 1 projects forward.
Fixed to 1.

座受体６の後端と背凭支持体８の前後中途部と
はピン１２連結されている。前記上面開放状箱型
の支持枠５の左右両側板５ａ，５ｂに穿設した孔
には、前後長溝孔１４を有する合成樹脂製のブツ
シユ１３を嵌挿し、該ブツシユ１３の前後長溝孔
１４に挿通したスライド軸１５の左右両端部に背
凭支持体８の前部を回動自在に連結する。 The rear end of the seat support 6 and the front and back midway portions of the backrest support 8 are connected by a pin 12. A synthetic resin bushing 13 having front and rear long slots 14 is inserted into the holes bored in the left and right side plates 5a, 5b of the box-shaped support frame 5 with an open top surface. The front part of the backrest support 8 is rotatably connected to both left and right ends of the inserted slide shaft 15.

符合１６は前記スライド軸１５を後向きに付勢
する付勢手段であつて、該付勢手段１６は支持枠
５内でその前端の左右長手の規制部１７と前記ス
ライド軸１５との間に前後方向に配設する少なく
とも一つ、好ましくは左右一対のコイルばね１
８，１８から成り、両コイルばね１８，１８の後
端はスライド軸１５に取付く合成樹脂製のばね受
け１９に接当させ、左右一対のコイルばね１８の
前端を各々受ける合成樹脂製の押さえ体２０前面
を下方向に行くに従つて前位置になる傾斜面２０
ａに形成し、該傾斜面２０と前記規制部１７との
間に合成樹脂製等の楔体２１を介挿し、該楔体２
１をハンドル２２付きねじ２３にて昇降させるこ
とにより、コイルばね１８によるスライド軸１５
の後向き付勢力を強弱調節する構成である。 Reference numeral 16 denotes a biasing means for biasing the slide shaft 15 backward, and the biasing means 16 is arranged between the left and right longitudinal regulating portions 17 at the front end of the support frame 5 and the slide shaft 15 in the front and rear directions. At least one coil spring 1, preferably a pair of left and right coil springs, arranged in the direction
The rear ends of both coil springs 18 and 18 are brought into contact with a synthetic resin spring receiver 19 attached to the slide shaft 15, and synthetic resin retainers each receive the front ends of the left and right pair of coil springs 18. An inclined surface 20 that becomes a front position as the front surface of the body 20 goes downward.
a, and a wedge body 21 made of synthetic resin or the like is inserted between the inclined surface 20 and the regulating part 17, and the wedge body 2
1 using the screw 23 with the handle 22, the slide shaft 15 is moved by the coil spring 18.
It is configured to adjust the strength of the backward biasing force.

支持枠５内にはその一側寄り位置に後端をスラ
イド軸１５に被嵌した合成樹脂製等の可動体２４
を前後動自在に配設し、該可動体２４の前後中途
部に穿設した長溝２５に一側板５ａに取付くガイ
ドピン２６を摺動自在に嵌挿している。符合２７
は可動体２４の前面と前記規制部１７との間に介
在させる合成樹脂製等のストツパ体で、該ストツ
パ体２７は、平面視Ｌ字状等の操作杆２８に取付
き、該操作杆２８の横向き片２８ａを支持枠５の
前端のフランジ部１１とその上面のガイド体２９
とで横向きに摺動自在となるように挟持し、横向
き片２８ａ先端の把手３０を座板１０の下方にお
いて支持枠５に近付けるように押し込めば、前記
ストツパ体２７が可動体２４の側方に離れ（第２
図の一点鎖線参照）、当該可動体２４はスライド
軸１５の前向き動にともなつて規制部１７に付近
くように前進できる。 Inside the support frame 5 is a movable body 24 made of synthetic resin or the like whose rear end is fitted onto the slide shaft 15 at a position closer to one side of the support frame 5.
A guide pin 26 attached to one side plate 5a is slidably inserted into a long groove 25 bored in the middle part of the movable body 24. sign 27
is a stopper body made of synthetic resin or the like that is interposed between the front surface of the movable body 24 and the regulating portion 17, and the stopper body 27 is attached to an operating rod 28 that is L-shaped in plan view, and The horizontal piece 28a is connected to the flange portion 11 at the front end of the support frame 5 and the guide body 29 on the upper surface thereof.
If the handle 30 at the tip of the horizontal piece 28a is pushed in close to the support frame 5 below the seat plate 10, the stopper body 27 will move to the side of the movable body 24. Away (Second
(See the dashed line in the figure), as the slide shaft 15 moves forward, the movable body 24 can move forward to approach the regulating portion 17.

換言すれば、付勢手段１６の付勢力によりスラ
イド軸１５を後向きに押圧し、この付勢力に抗し
て背凭支持体８が後傾するのに連動して、座受体
６が前位置の枢軸９個所を中心に下向き回動し、
座板１０及び座受体６の後部が下に沈みこむ構成
である。 In other words, the biasing force of the biasing means 16 presses the slide shaft 15 rearward, and as the backrest support 8 tilts backward against this biasing force, the seat support 6 moves to the front position. Rotates downward around nine pivot points,
The rear portions of the seat plate 10 and the seat support body 6 are configured to sink downward.

従つてこの状態では、座板１０に腰掛ける人の
荷重によつて座受体６に下向きの荷重が掛かる
と、背凭支持体８と座受体６後端部とのピン１２
連結部分を介して当該背凭支持体８の前部に取付
くスライド軸１５が付勢手段１６のコイルばね１
８による付勢力に抗して若干前向き移動し、座受
体６はその前端の枢軸９を中心にその後部がある
程度後下向きに傾動し、さらに背凭７に後向きの
荷重が掛かると、前記付勢力に抗して前記スライ
ド軸１５はさらに前進し、可動体２４の前面は支
持枠５内の規制部１７に近付くように移動するこ
とができる。 Therefore, in this state, when a downward load is applied to the seat support 6 due to the load of a person sitting on the seat plate 10, the pin 12 between the backrest support 8 and the rear end of the seat support 6
A slide shaft 15 attached to the front part of the backrest support 8 through a connecting portion is attached to a coil spring 1 of a biasing means 16.
The seat support 6 moves slightly forward against the biasing force 8, and the rear part of the seat support 6 tilts backward and downward to some extent around the pivot 9 at its front end. The slide shaft 15 moves further against the force, and the front surface of the movable body 24 can move closer to the regulating part 17 within the support frame 5.

即ち、前記付勢手段１６による力とバランスし
て背凭支持体８と連動して座受体６も後傾し、反
対に背凭７への力が少なくなると略水平状に戻る
という所謂揺り椅子にすることができる。 That is, this is a so-called rocking chair in which the seat support 6 also tilts backward in conjunction with the backrest support 8 in balance with the force exerted by the biasing means 16, and on the other hand returns to a substantially horizontal position when the force applied to the backrest 7 decreases. It can be done.

また、事務作業中等において、椅子１に座る人
の荷重の掛かり方如何で座板１０が後傾すること
を阻止したいような場合には、把手３０を支持枠
５の側方から離すように引つ張ると操作杆２８を
介してストツパ体２７が可動体２４の前面と規制
部１７との間に介在するように位置させることが
でき（第２図の実線参照）、これにより、可動体
２４は前進することが不能となる。 In addition, when it is desired to prevent the seat plate 10 from tilting backwards due to the load applied by the person sitting on the chair 1 during office work, etc., the handle 30 can be pulled away from the side of the support frame 5. When tensioned, the stopper body 27 can be positioned between the front surface of the movable body 24 and the regulating portion 17 via the operating rod 28 (see the solid line in FIG. 2). becomes unable to move forward.

従つて、この状態では、前記スライド軸１５も
前進できないので、座受体６が略水平状等の予め
定められた姿勢で固定され、座板１０及び背凭７
の姿勢を固定するいわゆるロツク状態にできるの
である。 Therefore, in this state, the slide shaft 15 cannot move forward, so the seat support 6 is fixed in a predetermined posture such as a substantially horizontal position, and the seat plate 10 and backrest 7
It is possible to create a so-called locked state in which the posture of the body is fixed.

この可動体２４の前進を阻止するストツパ体２
７は規制部１７と可動体２４との間で単に圧縮方
向の力を受けるだけであるから、それに対して抵
抗力を有する材料をストツパ体２７に選べば良
く、また、ストツパ体２７の形状も至極簡単なも
のにできるという効果を有する。 A stopper body 2 that prevents the movable body 24 from moving forward
7 is simply subjected to a force in the compressive direction between the regulating portion 17 and the movable body 24, so it is only necessary to select a material for the stopper body 27 that has a force that resists the force, and the shape of the stopper body 27 also has to be selected. This has the effect of making it extremely simple.

このように、本考案によれば、前後移動可能な
スライド軸と一体的に移動する可動体の前進を止
めるか止めないかの選択を、可動体の前面と支持
枠における規制部との間にストツパ体を介在させ
るか否かの選択的操作により至極簡単に実行でき
るものである。 As described above, according to the present invention, the selection of whether or not to stop the forward motion of the movable body that moves integrally with the slide shaft that is movable back and forth can be made between the front surface of the movable body and the regulating part of the support frame. This can be carried out extremely easily by selectively deciding whether or not to use the stopper body.

しかも、スライド軸に取付ける可動体とこの動
きを阻止するストツパ体及びその操作杆の付加だ
けであるから、必要部材の点数も少なく、椅子の
構造を簡単化するのに貢献できる。 Moreover, since only the movable body attached to the slide shaft, the stopper body for blocking this movement, and its operating rod are added, the number of required members is small, contributing to simplifying the structure of the chair.

なお、符合３１は、前記支持枠５の外側から操
作する操作杆２８にて当該操作杆２８に取付くス
トツパ体２７が、前記可動体２４の前進動を不能
にする規制姿勢と該規制解除の姿勢とに選択変更
できるようにする位置決め装置で、該位置決め装
置３１の実施例を第５図から第７図まで３種類示
す。 Note that the reference numeral 31 indicates that the stopper body 27 attached to the operating rod 28 operated from the outside of the support frame 5 is in a restricting posture that disables forward movement of the movable body 24 and in a position in which the restriction is released. The positioning device 31 is a positioning device that allows selection and change of posture, and three types of embodiments of the positioning device 31 are shown in FIGS. 5 to 7.

第５図に示す位置決め装置３１の第２実施例
は、前記フランジ部１１から上向き突出するばね
３２付きのボール状等の係合片３３を操作杆２８
における横向き片２８ａに凹みまたは穿設した係
止部３４に係合させることにより、横向き片２８
ａの移動位置、ひいてはストツパ体２７の位置を
不用意に動かないように位置決めできる。 A second embodiment of the positioning device 31 shown in FIG.
By engaging with the locking portion 34 recessed or bored in the horizontal piece 28a, the horizontal piece 28a
The moving position of a and, by extension, the position of the stopper body 27 can be determined so as not to move inadvertently.

第６図に示す位置決め装置３１の第３実施例
は、フランジ部１１に基端を固着した板ばね３５
先端の凸湾曲係合部を横向き片２８ａの側端面に
凹み係止部３６に係合させる形式である。この形
式の位置決め装置３１では上下寸法を極めて小さ
くできる効果を有する。 A third embodiment of the positioning device 31 shown in FIG.
A convex curved engagement portion at the tip is engaged with a locking portion 36 recessed in the side end surface of the horizontal piece 28a. This type of positioning device 31 has the effect of making the vertical dimension extremely small.

第７図に示す位置決め装置３１の第４実施例
は、フランジ部１１に基端を固着した板ばね３７
の穿設孔３８を横向き片２８ａの下向き突起状係
合部３９に選択的に係合させて位置決めするもの
である。 A fourth embodiment of the positioning device 31 shown in FIG.
The perforated hole 38 is selectively engaged with the downwardly protruding engaging portion 39 of the horizontal piece 28a for positioning.

第８図及び第９図に示す傾動規制装置の第２実
施例では、スライド軸１５に基端を被嵌した金属
製の可動体４０は枢軸９の下方と規制部１７上端
との隙間を通過してフランジ部１１方向へ前向き
に延び、この可動体４０はスライド軸１５と一体
的に前後動できる。そして、前記フランジ部１１
上面とガイド体４２により摺動自在に挟持された
横向きの操作杆４１の先端側面をストツパ体に兼
用させ、該操作杆４１を、前記可動体４０の前面
側に前進したときは（第９図の一点鎖線参照）、
当該可動体４０の前進を阻止し、操作杆４１を後
退させる状態（第９図の実線状態参照）では可動
体４０の前進が自由であるように構成するもので
ある。 In the second embodiment of the tilt regulating device shown in FIGS. 8 and 9, the metal movable body 40 whose base end is fitted onto the slide shaft 15 passes through the gap between the lower part of the pivot shaft 9 and the upper end of the regulating part 17. The movable body 40 extends forward in the direction of the flange portion 11, and can move back and forth integrally with the slide shaft 15. Then, the flange portion 11
The side surface of the distal end of the horizontal operation rod 41, which is slidably held between the upper surface and the guide body 42, is also used as a stopper body, and when the operation rod 41 is advanced toward the front side of the movable body 40 (see FIG. 9). ),
In the state where the movable body 40 is prevented from moving forward and the operating rod 41 is retracted (see the solid line state in FIG. 9), the movable body 40 is configured to freely move forward.

なお、前記操作杆４１の前進後退位置の位置決
め位置３１はガイド体４２の箇所に設けてある。 Note that the positioning position 31 of the forward and backward positions of the operating rod 41 is provided at the guide body 42.

第１０図に示す傾動規制装置の第３実施例は、
スライド軸１５と一体的に前後動する可動体４３
の前面に対して選択的に横移動させて位置するこ
とができるストツパ体４４を、支持枠５の一側板
５ｂの凹溝箇所から突出する操作杆４５に取付
け、該操作杆４５の先端に把手４６を固着てあ
り、また、ストツパ体４４の後面は支持枠５にお
ける規制部１７の後面に沿つて摺動できる。 The third embodiment of the tilting regulating device shown in FIG.
A movable body 43 that moves back and forth integrally with the slide shaft 15
A stopper body 44, which can be selectively moved laterally and positioned with respect to the front surface of the support frame 5, is attached to an operating rod 45 protruding from a grooved portion of one side plate 5b of the support frame 5, and a handle is attached to the tip of the operating rod 45. 46 is fixed, and the rear surface of the stopper body 44 can slide along the rear surface of the regulating portion 17 in the support frame 5.

この実施例においても、前記第２図の実施例と
同様にストツパ体４４が可動体４３と規制部１７
との間に介在したとき、可動体４３の前進を阻止
することができるものである。 In this embodiment as well, the stopper body 44 is connected to the movable body 43 and the regulating portion 17 as in the embodiment shown in FIG.
When interposed between the movable body 43 and the movable body 43, the movable body 43 can be prevented from moving forward.

第１１図及び第１２図で示す傾動規制装置の第
４実施例では、平面視略Ｌ字状の操作杆４７の後
向き片４７ａの後端にストツパ体４８を取付け
し、後向き片４７ａの箇所を中心に回動可能とな
るように板ばね製等の支持片４９にて支持し、操
作杆４７他端の把手５１を上向き回動すればスト
ツパ体４８を可動体５０前端面と規制部１７との
間に介挿できるように構成するものである。 In the fourth embodiment of the tilt regulating device shown in FIGS. 11 and 12, a stopper body 48 is attached to the rear end of the rearwardly facing piece 47a of the operating rod 47 which is approximately L-shaped in plan view, and the position of the rearwardly facing piece 47a is It is supported by a support piece 49 made of a plate spring or the like so that it can rotate about the center, and by rotating the handle 51 at the other end of the operating rod 47 upward, the stopper body 48 is moved between the front end surface of the movable body 50 and the regulating part 17. The structure is such that it can be inserted between the two.

この実施例において、前記後向き片４７ａの箇
所にローレツト部等の回動の位置決め部５２を設
け、該位置決め部５２を支持片４９にて押さえる
ことにより、ストツパ体４８ひいては操作杆４７
の回動姿勢を前記可動体５０の前端面から外れる
位置と前記介挿する位置とに選択的に位置保持で
きるように構成している（第１２図参照）。 In this embodiment, a rotary positioning part 52 such as a knurled part is provided at the rearward facing piece 47a, and by pressing the positioning part 52 with the support piece 49, the stopper body 48 and the operating rod 47
The rotary posture of the movable body 50 can be selectively maintained at a position removed from the front end surface of the movable body 50 and a position inserted into the movable body 50 (see FIG. 12).

なお、第２図及び第３図に示す符合５３は、前
記支持枠５を昇降させるガススプリング４の操作
弁体４ａを操作する操作手段で、該操作手段５３
における操作レバー５４は支持枠５の前端フラン
ジ部１１に挟持兼用の位置決め位置５５に対して
左右動自在に装着され、該操作レバー５４に連結
ピン５６を介して後向きに延びる操作軸５７の中
途部を、支持枠５の左右両側板５ａ，５ｂに掛け
渡すブラケツト５８の枢支ピン５９に回動自在に
支持する。 Note that reference numeral 53 shown in FIGS. 2 and 3 is an operating means for operating the operating valve body 4a of the gas spring 4 that raises and lowers the support frame 5;
The operating lever 54 is mounted on the front end flange portion 11 of the support frame 5 so as to be movable left and right with respect to a positioning position 55 which also serves as a clamping member. is rotatably supported by a pivot pin 59 of a bracket 58 that spans the left and right side plates 5a, 5b of the support frame 5.

他方、前記ガススプリング４上端の操作弁体４
ａ上に接当する微調節ねじ６１付き押圧手段６０
は取付ブラケツト６２に上下回動自在となるよう
に軸６３支持され、この押圧手段６０に前記操作
軸５７の後端を関連させ、第２図の二点鎖線に示
すように支持枠５の側方外向きに把手６４を引け
ば、前記押圧手段６０を介してガススプリング４
における操作弁体４ａを下向きに押して、ガスス
プリング４の弁を開くとガススプリング４のばね
作用が解除されて、自由に脚体２の高さ調節が可
能となり、反対に押圧手段６０が操作弁体４ａか
ら離れると、ガススプリング４のばね作用が働く
ようにするものである。 On the other hand, the operating valve body 4 at the upper end of the gas spring 4
Pressing means 60 with a fine adjustment screw 61 that comes into contact with a
is supported by a shaft 63 on a mounting bracket 62 so as to be movable up and down, and the rear end of the operating shaft 57 is connected to this pressing means 60, so that the rear end of the operating shaft 57 is connected to the side of the support frame 5 as shown by the two-dot chain line in FIG. When the handle 64 is pulled outward, the gas spring 4 is pushed through the pressing means 60.
When the operating valve body 4a is pushed downward to open the valve of the gas spring 4, the spring action of the gas spring 4 is released and the height of the leg body 2 can be freely adjusted. When separated from the body 4a, the spring action of the gas spring 4 is activated.

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

図面は本考案の実施例を示し、第１図は椅子の
側面図、第２図は支持枠等の要部拡大平面図、第
３図は第２図の−視断面図、第４図は第２図
の−視一部切欠き断面図、第５図は位置決め
装置の第２実施例の斜視図、第６図は位置決め装
置の第３実施例の斜視図、第７図は位置決め装置
の第４実施例の斜視図、第８図は傾動規制装置の
第２実施例を示す側断面図、第９図は第８図の平
面図、第１０図は傾動規制装置の第３実施例を示
す要部平断面図、第１１図は傾動規制装置の第４
実施例を示す斜視図、第１２図は第１１図のＸ
−Ｘ視断面図である。 １……椅子、２……脚体、４……ガススプリン
グ、５……支持枠、６……座受体、７……背凭、
８……背凭支持体、９……枢軸、１０……座板、
１１……フランジ部、１２……ピン、１３……ブ
ツシユ、１４……前後長溝孔、１５……スライド
軸、１６……付勢手段、１７……規制部、１８…
…コイルばね、２１……楔体、２４，４０，４
３，５０……可動体、２５……長溝、２６……ガ
イドピン、２７，４４，４８……ストツパ体、２
８，４１，４５，４７……操作杆、３０，４６、
５１……把手、３１……位置決め装置、５３……
操作手段、５４……操作レバー、５７……操作
軸、６０……押圧手段、６１……微調節ねじ。 The drawings show an embodiment of the present invention; FIG. 1 is a side view of the chair, FIG. 2 is an enlarged plan view of main parts such as the support frame, FIG. 3 is a sectional view taken from the side of FIG. 2, and FIG. FIG. 5 is a perspective view of the second embodiment of the positioning device, FIG. 6 is a perspective view of the third embodiment of the positioning device, and FIG. 7 is a perspective view of the third embodiment of the positioning device. FIG. 8 is a side sectional view showing the second embodiment of the tilt regulating device, FIG. 9 is a plan view of FIG. 8, and FIG. 10 is a third embodiment of the tilt regulating device. Fig. 11 is a plan sectional view of the main part shown, and Fig. 11 shows the fourth part of the tilting control device.
A perspective view showing the embodiment, FIG. 12 is the X in FIG. 11.
- It is a sectional view taken from X. 1... Chair, 2... Leg body, 4... Gas spring, 5... Support frame, 6... Seat support, 7... Backrest,
8...Backrest support, 9...Pivot, 10...Seat plate,
DESCRIPTION OF SYMBOLS 11...Flange part, 12...Pin, 13...Button, 14...Front and rear elongated slot, 15...Slide shaft, 16...Biasing means, 17...Restriction part, 18...
...Coil spring, 21...Wedge body, 24, 40, 4
3, 50...Movable body, 25...Long groove, 26...Guide pin, 27, 44, 48...Stopper body, 2
8, 41, 45, 47...operating rod, 30, 46,
51...handle, 31...positioning device, 53...
Operating means, 54... Operating lever, 57... Operating shaft, 60... Pressing means, 61... Fine adjustment screw.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 椅子の脚体に支持された支持枠の前寄り位置
に、上面に座板が取付く座受体の前端を枢軸を介
して上下回動自在に連結し、前記座受体の後端が
ピン連結された背凭支持体を、前記支持枠の左右
両側板に穿設した前後長溝孔に挿通したスライド
軸に回動自在に連結し、前記支持枠内に配設した
付勢手段にて前記スライド軸が後退するように付
勢する一方、該スライド軸と一体的に前後動する
可動体を支持枠内に配設し、前記支持枠の外側か
らの操作杆の進退移動または回動移動にて、当該
操作杆の先端部に設けたストツパ体を、前記可動
体の前方に臨ませて、当該可動体の前進動を規制
するように構成したことを特徴とする椅子の傾動
規制装置。 The front end of the seat support, on which the seat plate is attached to the upper surface, is connected to the front of the support frame supported by the legs of the chair via a pivot so that it can move up and down, and the rear end of the seat support is attached to a pin. The connected backrest support is rotatably connected to a slide shaft inserted into a front and rear long slot formed in the left and right side plates of the support frame, and the biasing means disposed within the support frame is used to rotate the backrest support. A movable body that urges the slide shaft to retreat and moves back and forth integrally with the slide shaft is disposed within the support frame, and is adapted to move the operating rod forward and backward or rotate from the outside of the support frame. A tilt regulating device for a chair, characterized in that a stopper body provided at the tip of the operating rod faces forward of the movable body to restrict forward movement of the movable body.