JP4500388B2 - Chair seat and back tilting device - Google Patents
Chair seat and back tilting device Download PDFInfo
- Publication number
- JP4500388B2 JP4500388B2 JP31840099A JP31840099A JP4500388B2 JP 4500388 B2 JP4500388 B2 JP 4500388B2 JP 31840099 A JP31840099 A JP 31840099A JP 31840099 A JP31840099 A JP 31840099A JP 4500388 B2 JP4500388 B2 JP 4500388B2
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- Prior art keywords
- backrest
- seat
- shaft
- downward
- tilting device
- 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.)
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Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
Description
【０００１】
【発明の属する技術分野】
本発明は、背凭れを、ばねに抗して後下方に傾動しうるとともに、背凭れに連動して、座席が、後下方に移動するようにした、椅子の座席と背凭れの傾動装置に関する。
【０００２】
【従来の技術】
このような傾動装置の従来例としては、例えば特開平１１−２５３２６３号公報に記載されているものがある。
この傾動装置は、脚柱の上端部に固着されたメインフレームの前部に設けられた前後方向を向くガイド孔に、左右方向を向くスライドシャフトを挿通し、このスライドシャフトを、座席が取り付けられた座板の下面前部に枢着し、メインフレームの下面前端部に、後上方に向かって延出するとともに、後端部に背凭れ支持部が設けられた揺動部材の前端部を、傾動復帰部材であるコイルばねを介して後下方に傾動自在に枢着し、揺動部材の後端部の両側面に突設されたシンクロシャフトを座板の下面後部に枢着することにより、背凭れを、コイルばねに抗して、後下方に傾動しうるとともに、座席が後下方に移動しうるようになっている。
【０００３】
【発明が解決しようとする課題】
しかし、上記の傾動装置では、シンクロシャフトの座板の下面に対する枢着部が、揺動部材とメインフレームとの枢着部から後方に離れているので、使用者が座席に着座した際の下向きの荷重により、座席と背凭れが後下方に傾動し、安定が悪くなるという問題がある。
【０００４】
また、座席と背凭れが傾動すると、コイルばねが伸縮するため、コイルばねの消耗が早められることとなる。
【０００５】
本発明は、従来の技術が有する上記のような問題点に鑑みてなされたもので、使用者が着座した際に、座席と背凭れが妄りに移動しないようにすることにより、安定した、状態で着座しうるようにするとともに、バネの消耗を最小限に抑えるようにした椅子の座席と背凭れの傾動装置を提供することを目的としている。
【０００６】
【課題を解決するための手段】
本発明によると、上記課題は、次のようにして解決される。
（１）脚柱の上端部に固着された支基に、背凭れを支持する背凭れ杆の下部より前方に屈曲した先端部を、左右方向を向く回転軸により枢着して、背凭れ杆をばねに抗して後下方に傾動自在とするとともに、前記支基に、座席を支持する座席受体を、前記背凭れ杆の後下方への傾動に連動して、ばねに抗して後下方に向かって摺動しうるように取り付けた椅子の座席と背凭れの傾動装置において、前記背凭れ杆の先端部より前記回転軸の後斜め上方に向かって延出する延長部に、左右方向を向く軸を固着し、この軸により、前記座席受体の後部を支承する。
【０００７】
（２）脚柱の上端部に固着された支基に、背凭れを支持する背凭れ杆の下部より前方に屈曲した先端部を、左右方向を向く回転軸により枢着して、背凭れ杆をばねに抗して後下方に傾動自在とするとともに、前記支基に、座席を支持する座席受体を、前記背凭れ杆の後下方への傾動に連動して、ばねに抗して後下方に向かって摺動しうるように取り付けた椅子の座席と背凭れの傾動装置において、前記座席受体における前記回転軸の上方に、前記回転軸を中心とする円の接線をなして後下方に傾斜する長孔を設け、かつ前記背凭れ杆の先端部より前記回転軸の後斜め上方に向かって延出する延長部に固着した左右方向を向く軸を、前記長孔に摺動自在に嵌合し、前記座席受体に設けた長孔と、それに嵌合した前記軸とにより、前記座席受体の後部を支持する。
【０００８】
【発明の実施の形態】
以下、本発明の一実施形態を備える椅子(１)について、添付図面を参照しながら説明する。
なお、以下の説明中においては、図１の左側を「前方」とし、右側を「後方」とする。
【０００９】
中心部から放射状に延出する支持脚(２)の先端部には、キャスタ(３)が設けられ、支持脚(２)の中心部には、上下方向を向く脚柱(４)が立設され、かつ脚柱(４)の上端部には、支基(５)が固着されている。
支基(５)の後端部には、左右方向を向く筒体(６)が貫着されており、筒体(６)の両端部には、側面視方形をなす突部(７)が設けられた回転軸(８)が、筒体(６)回りに所要角度だけ回転自在、かつ筒体(６)の内部に設けられたトーションバー等のばね(図示略)により、図３の状態に復帰する方向に付勢された状態で設けられている。
【００１０】
支基(５)の前端部の左右両側部より前向きに突設された左右１対の腕部(９)の前端部には、前後方向を向く水平の長孔(10)が穿設され、この長孔(10)と、上面に座席(11)が装着された座席受体(12)の下面の前端部に設けた垂下片(13)における軸孔(14)とには、左右方向を向く長寸のピン(15)が、回転自在に嵌挿されている。
また、腕部(９)(９)の内部には、図示を省略した圧縮コイルばねが縮設されており、この圧縮コイルばねにより、ピン(15)は、常時長孔(10)の前端側に向けて付勢されている。
【００１１】
座席受体(12)は、中央部がほぼ方形状に開口する平面視ほぼ方形枠状のもので、開口部の後端部における左右両端部には、回転軸(８)を中心とする円の接線をなして後下方（すなわち、前斜め上方）を向く長孔(16)が穿設された軸受部材(17)が設けられており、左右の軸受部材(17)の間には、若干後斜め下方を向くとともに、その下端部の左右両側面に、水平の外向の突軸(18)を設けた傾斜片(19)が設けられている。
【００１２】
図１及び図３に示すように、左右１対のほぼ上下方向を向く取付片(20)の下端部同士を左右方向を向く連結杆(21)により結合するとともに、各取付片(20)の下端部に前向き杆(22)を連設した背凭れ杆(23)における左右の取付片(20)には、背凭れ(24)の下端部が取付けられている。
【００１３】
左右の前向き杆(22)の前端部には、内側面と前面とが開口し、支基(５)における左右の回転部(８)の突部(７)と補形をなす嵌合溝(25)が形成され、嵌合溝(25)には突部(７)が嵌合されるとともに、嵌合溝(25)と突部(７)は、回転不能にねじ(26)止めされている。
【００１４】
左右の前向き杆(22)の前端部には、回転軸(８)からほぼ上方、より正確には後斜め上方を向く延長部をなす上向きの耳片(27)が突設され、耳片(27)に穿設された軸孔(28)には、左右方向を向く軸(29)が挿通され、この軸(29)は、座席受体(12)の長孔(16)に、その長手方向に移動自在に嵌挿されている。
また、前向き杆(22)の前後方向の中間部の内側面に形成された、前斜め下方を向く案内溝(30)には、座席受体(12)の突軸(18)が摺動自在に嵌合している。
【００１５】
次に、以上のような構成からなる本実施形態の椅子(１)の作用について説明する。
【００１６】
椅子(１)は、常時は、図示を省略した上述の圧縮コイルばねとばねとトーションバー等のばねの付勢力によって、図１及び図４に示す状態に保持されている。
【００１７】
図２及び図５に示すように、使用者(Ａ)(図５では図示略)が座席(11)に着座した状態で、背凭れ(24)に寄りかかると、背凭れ杆(23)が後下方に向かって回動するとともに、突軸(18)が案内溝(30)内を前下方に向かって摺動しつつ、後下方に引かれ、ピン(15)が長孔(10)の後端側に移動するとともに、長孔(16)が軸(29)に対して相対的に後下方に移動する。
【００１８】
しかし、椅子(４)が図１及び図４に示す状態にある時に、使用者(Ａ)が座席(11)に勢いよく着座したとしても、座席(11)と背凭れ(24)は、図２及び図５に示すような位置に移動することはない。
すなわち、図４に示すように、使用者(Ａ)(図４では図示略)が座席(11)に着座することにより、長孔(16)を介して、軸(29)には矢印(Ｂ)方向の力が生じるものの、この力は、背凭れ杆(23)の回転中心である回転軸(８)の方向を向いているので、背凭れ杆(23)は回動することはなく、また、背凭れ杆(23)は回動しないので、背凭れ杆(23)と連動している座席受体(12)も、図１及び図４に示す状態から移動することはない。
従って使用者(Ａ)が着座した際に、座席(11)や背凭れ(24)が妄りに動くことはなく、使用者(Ａ)は安定した状態で着座することができるとともに、圧縮コイルばねやその他のばねがいたずらに伸縮することもないので、これらの部品の寿命を縮めることもない。
【００１９】
なお、上述した例では、長孔(16)を、後斜め下方を向くように設けたことに関連して、軸(29)を、回転軸(８)の直上ではなく、若干後下方に位置させ、座席(11)の後部に掛る下向きの荷重が、長孔(16)の傾斜面に反らされて、すべて回転軸(８)の中心またはそれに近い方向を向くようにしたが、基本的には、軸(29)を背凭れ杆(23)の前端部より回転軸(８)の直上に向かって延出する背凭れ杆(23)の延長部の上端部に設け、座席(11)の後部に掛る下向きの荷重が、軸(29)を介して、その真下の回転軸(８)の中心またはそれに近い点に掛るようにすればよい。
【００２０】
【発明の効果】
本発明によると、次のような効果を奏することができる。
(Ａ) 請求項１及び２記載の発明によると、座席の後部に掛る下向きの荷重は、すべて背凭れ杆の回転中心、またはそれに近い点に掛るので、使用者がたとえ勢いよく着座したとしても、座席や背凭れが妄りに動くことはなく、使用者は安定した状態で着座することができる。
【００２１】
(Ｂ) また、座席や背凭れを非使用位置に向けて付勢するばねがいたずらに伸縮することもないので、これらの部品の寿命を縮めることもない。
【００２２】
(Ｃ) 請求項２記載の発明によると、座席受体の後部を後下方に移動しうるようにするため、座席受体に設ける長孔を後下方に向けて傾斜させた場合でも、座席の後部に掛る下向きの荷重を、背凭れ杆の回転中心またはそれに近い点に向けさせ、上記(Ａ)及び(Ｂ)の効果と同様の効果をもたらすことができる。
【図面の簡単な説明】
【図１】本発明の一実施形態を備える椅子に使用者が着座した状態を示す側面図である。
【図２】同じく、座席と背凭れをリクライニング状態に移動させた際の椅子の側面図である。
【図３】同じく、椅子の要部の分解斜視図である。
【図４】同じく、椅子の要部の拡大側面図である。
【図５】同じく、座席と背凭れをリクライニング状態に移動させた際の椅子の要部の拡大側面図である。
【符号の説明】
(１)椅子
(２)支持脚
(３)キャスタ
(４)脚柱
(５)支基
(６)筒体
(７)突部
(８)回転軸
(９)腕部
(10)長孔
(11)座席
(12)座席受体
(13)垂下片
(14)軸孔
(15)ピン
(16)長孔
(17)軸受部材
(18)突軸
(19)傾斜片
(20)取付片
(21)連結杆
(22)前向き杆
(23)背凭れ杆
(24)背凭れ
(25)嵌合溝
(26)ねじ
(27)耳片（延長部）
(28)軸孔
(29)軸
(30)案内溝[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair seat and a backrest tilting device that can tilt the backrest backward and downward against a spring and move the seat backward and downward in conjunction with the backrest. .
[0002]
[Prior art]
As a conventional example of such a tilting device, for example, there is one described in JP-A-11-253263.
In this tilting device, a slide shaft facing in the left-right direction is inserted into a guide hole facing in the front-rear direction provided in the front portion of the main frame fixed to the upper end portion of the pedestal, and the seat is attached to the slide shaft. The front end of the swinging member is pivotally attached to the lower front portion of the seat plate and extends rearward and upward to the lower front end of the main frame, and the back support portion is provided at the rear end. By pivotally pivoting backward and downward via a coil spring that is a tilt return member, and by pivotally mounting a synchro shaft projecting on both side surfaces of the rear end portion of the swing member to the lower rear portion of the seat plate, The backrest can be tilted rearward and downward against the coil spring, and the seat can be moved rearward and downward.
[0003]
[Problems to be solved by the invention]
However, in the tilting device described above, the pivoting portion of the synchro shaft with respect to the lower surface of the seat plate is rearwardly separated from the pivoting portion of the swing member and the main frame. This causes a problem that the seat and the backrest tilt rearward and lower, resulting in poor stability.
[0004]
Further, when the seat and the backrest tilt, the coil spring expands and contracts, so that the coil spring is quickly consumed.
[0005]
The present invention has been made in view of the above-described problems of the prior art. When the user is seated, the seat and the backrest are prevented from moving unreasonably, so that the state is stable. It is an object of the present invention to provide a chair seat and a backrest tilting device that can be seated at the same time and that minimizes the wear of the spring.
[0006]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) The tip part bent forward from the lower part of the backrest heel supporting the backrest is pivotally attached to the support base fixed to the upper end of the pedestal by a rotating shaft facing in the left-right direction. Can be tilted rearward and downward against the spring, and a seat receiver that supports the seat is supported on the support base in response to the downward tilting of the backrest against the spring. In a tilting device for a chair seat and a backrest that are attached so as to be slidable downward, an extension portion that extends obliquely upward and rearward from the front end portion of the backrest heel in the left-right direction A shaft facing the head is fixed, and the rear portion of the seat receiver is supported by this shaft.
[0007]
(2) The tip part bent forward from the lower part of the backrest saddle supporting the backrest is pivotally attached to the support base fixed to the upper end of the pedestal by the rotating shaft facing in the left-right direction. Can be tilted rearward and downward against the spring, and a seat receiver that supports the seat is supported on the support base in response to the downward tilting of the backrest against the spring. In a tilting device for a seat and a backrest of a chair attached so as to be slidable downward, a rear tangent is formed above the rotational axis of the seat receiver and tangent to a circle centering on the rotational axis And a shaft facing in the left-right direction fixed to an extension extending obliquely upward and rearward from the front end of the backrest is slidable in the long hole. The long hole provided in the seat receiver, and the shaft fitted thereto, Part to support the.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a chair (1) provided with one embodiment of the present invention is explained, referring to an accompanying drawing.
In the following description, the left side of FIG. 1 is “front” and the right side is “rear”.
[0009]
A caster (3) is provided at the distal end of the support leg (2) extending radially from the center, and a vertical column (4) is vertically provided at the center of the support leg (2). The support base (5) is fixed to the upper end of the pedestal (4).
A cylindrical body (6) facing in the left-right direction is attached to the rear end portion of the support base (5), and protrusions (7) forming a side view square are formed at both ends of the cylindrical body (6). The rotating shaft (8) provided is rotatable around the cylinder (6) by a required angle, and a spring (not shown) such as a torsion bar provided inside the cylinder (6) is in the state shown in FIG. It is provided in a state of being urged in the direction of returning to the position.
[0010]
At the front end of a pair of left and right arms (9) projecting forward from the left and right sides of the front end of the support base (5), a horizontal long hole (10) facing in the front-rear direction is formed. The long hole (10) and the shaft hole (14) in the hanging piece (13) provided at the front end portion of the lower surface of the seat receiver (12) with the seat (11) mounted on the upper surface have a lateral direction. A long pin (15) that faces is rotatably inserted.
In addition, a compression coil spring (not shown) is provided in the arms (9) and (9) so that the pin (15) is always on the front end side of the long hole (10). It is energized towards.
[0011]
The seat receiver (12) has a substantially rectangular frame shape in plan view with a central portion opening in a substantially square shape, and a circular center around the rotation axis (8) is provided at both left and right ends of the rear end portion of the opening. The bearing member (17) is provided with a long hole (16) that is tangent to the rear and downward (that is, obliquely upward in the front), and there is a slight gap between the left and right bearing members (17). An inclined piece (19) is provided that faces obliquely downward in the rear and is provided with horizontal outward projecting shafts (18) on both left and right side surfaces of the lower end thereof.
[0012]
As shown in FIGS. 1 and 3, the lower ends of a pair of left and right mounting pieces (20) facing substantially vertically are joined together by a connecting rod (21) facing left and right, and each mounting piece (20) The lower end portion of the backrest (24) is attached to the left and right attachment pieces (20) of the backrest heel (23) in which the forward heel (22) is continuously provided at the lower end portion.
[0013]
At the front end of the left and right forward facing rods (22), the inner surface and the front surface are opened, and the fitting groove (complementary to the protrusion (7) of the left and right rotating portions (8) of the support base (5)) 25) is formed, and the protrusion (7) is fitted into the fitting groove (25), and the fitting groove (25) and the protrusion (7) are screwed (26) so as not to rotate. Yes.
[0014]
On the front ends of the left and right forward-facing ridges (22), an upward ear piece (27) is formed so as to project from the rotating shaft (8), and more precisely, an extension that faces obliquely upward to the rear. The shaft hole (28) drilled in 27) is inserted in the left-right direction shaft (29), and this shaft (29) is inserted into the long hole (16) of the seat receiver (12) in the longitudinal direction. It is inserted so as to be movable in the direction.
In addition, the projecting shaft (18) of the seat receiver (12) is slidable in the guide groove (30) that is formed on the inner side surface of the front-facing rod (22) in the front-rear direction and that faces diagonally downward. Is fitted.
[0015]
Next, the operation of the chair (1) of the present embodiment configured as described above will be described.
[0016]
The chair (1) is normally held in the state shown in FIGS. 1 and 4 by the above-described compression coil spring (not shown) and the urging force of a spring such as a spring and a torsion bar.
[0017]
As shown in FIGS. 2 and 5, when the user (A) (not shown in FIG. 5) is seated on the seat (11) and leans against the backrest (24), the backrest heel (23) While rotating downward, the projecting shaft (18) slides forward and downward in the guide groove (30) and is pulled rearward and downward, and the pin (15) is behind the slot (10). While moving to the end side, the long hole (16) moves rearward and downward relative to the shaft (29).
[0018]
However, when the chair (4) is in the state shown in FIGS. 1 and 4, even if the user (A) sits on the seat (11) vigorously, the seat (11) and the backrest (24) 2 and the position shown in FIG. 5 are not moved.
That is, as shown in FIG. 4, when the user (A) (not shown in FIG. 4) is seated on the seat (11), the shaft (29) has an arrow (B ) Direction force is generated, but this force is directed in the direction of the rotation axis (8), which is the center of rotation of the backrest heel (23), so the backrest heel (23) does not rotate, Further, since the backrest ridge (23) does not rotate, the seat receiver (12) interlocked with the backrest ridge (23) also does not move from the state shown in FIGS.
Therefore, when the user (A) is seated, the seat (11) and the backrest (24) do not move unreasonably, the user (A) can sit in a stable state, and the compression coil spring And other springs do not expand and contract unnecessarily, so the life of these parts is not shortened.
[0019]
In the above-described example, the shaft (29) is not positioned directly above the rotating shaft (8) but slightly rearward and lower in relation to providing the long hole (16) so as to face obliquely downward. The downward load on the rear part of the seat (11) is deflected by the inclined surface of the long hole (16) so that it is directed to the center of the rotating shaft (8) or the direction close to it. The shaft (29) is provided at the upper end portion of the extension portion of the backrest ridge (23) extending from the front end portion of the backrest ridge (23) directly above the rotation shaft (8), and the seat (11) The downward load applied to the rear portion may be applied to the center of the rotation shaft (8) just below or a point close to it via the shaft (29).
[0020]
【The invention's effect】
According to the present invention, the following effects can be achieved.
(A) According to the first and second aspects of the invention, since the downward load applied to the rear part of the seat is all applied to the center of rotation of the backrest or a point close thereto, even if the user is seated vigorously The seat and backrest do not move in a delusion, and the user can sit in a stable state.
[0021]
(B) Further, since the spring for urging the seat and the backrest toward the non-use position does not unnecessarily expand and contract, the service life of these parts is not shortened.
[0022]
(C) According to the invention described in
[Brief description of the drawings]
FIG. 1 is a side view showing a state in which a user is seated on a chair provided with an embodiment of the present invention.
FIG. 2 is a side view of the chair when the seat and the backrest are moved to the reclining state.
FIG. 3 is an exploded perspective view of the main part of the chair.
FIG. 4 is an enlarged side view of the main part of the chair, similarly.
FIG. 5 is an enlarged side view of the main part of the chair when the seat and the backrest are moved to the reclining state.
[Explanation of symbols]
(1) Chair
(2) Support legs
(3) Casters
(4) pedestal
(5) Support base
(6) Tube
(7) Projection
(8) Rotating shaft
(9) Arm
(10) Long hole
(11) Seat
(12) Seat receptacle
(13) Drooping piece
(14) Shaft hole
(15) Pin
(16) Long hole
(17) Bearing member
(18) Projection shaft
(19) Inclined piece
(20) Mounting piece
(21) Linkage
(22) forward facing
(23) Backrest
(24) Backrest
(25) Mating groove
(26) Screw
(27) Ear piece (extension part)
(28) Shaft hole
(29) axis
(30) Guide groove
Claims (2)
前記背凭れ杆の先端部より前記回転軸の後斜め上方に向かって延出する延長部に、左右方向を向く軸を固着し、この軸により、前記座席受体の後部を支承するようにしたことを特徴とする椅子の座席と背凭れの傾動装置。The tip part bent forward from the lower part of the backrest that supports the backrest is pivotally attached to the support base fixed to the upper end of the pedestal by a rotating shaft that faces in the left-right direction, and the backrest is used as a spring. The seat support that supports the seat is supported on the support base in conjunction with the rearward downward tilt of the backrest against the spring toward the rear downward. In the chair seat and back tilting device attached so that it can slide
A shaft that faces in the left-right direction is fixed to an extension portion that extends obliquely upward and rearward from the front end portion of the backrest heel, and the rear portion of the seat receiver is supported by this shaft. A tilting device for the seat and backrest of the chair.
前記座席受体における前記回転軸の上方に、前記回転軸を中心とする円の接線をなして後下方に傾斜する長孔を設け、かつ前記背凭れ杆の先端部より前記回転軸の後斜め上方に向かって延出する延長部に固着した左右方向を向く軸を、前記長孔に摺動自在に嵌合し、前記座席受体に設けた長孔と、それに嵌合した前記軸とにより、前記座席受体の後部を支持するようにしたことを特徴とする椅子の座席と背凭れの傾動装置。The tip part bent forward from the lower part of the backrest that supports the backrest is pivotally attached to the support base fixed to the upper end of the pedestal by a rotating shaft that faces in the left-right direction, and the backrest is used as a spring. The seat support that supports the seat is supported on the support base in conjunction with the rearward downward tilt of the backrest against the spring toward the rear downward. In the chair seat and back tilting device attached so that it can slide
Above the rotation axis in the seat receptacle, a long hole provided which is inclined rearward and downward at an tangent of a circle centered on the said rotation axis and oblique after said rotary shaft from the tip portion of the backrest rod A left and right shaft fixed to the extension extending upward is slidably fitted into the elongated hole, and the elongated hole provided in the seat receiver and the shaft fitted thereto The chair seat and backrest tilting device characterized by supporting the rear part of the seat receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31840099A JP4500388B2 (en) | 1999-11-09 | 1999-11-09 | Chair seat and back tilting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31840099A JP4500388B2 (en) | 1999-11-09 | 1999-11-09 | Chair seat and back tilting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001128786A JP2001128786A (en) | 2001-05-15 |
| JP4500388B2 true JP4500388B2 (en) | 2010-07-14 |
Family
ID=18098740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31840099A Expired - Fee Related JP4500388B2 (en) | 1999-11-09 | 1999-11-09 | Chair seat and back tilting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4500388B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5345364B2 (en) * | 2008-10-20 | 2013-11-20 | タカノ株式会社 | Backrest mounting structure |
| JP5280167B2 (en) * | 2008-11-28 | 2013-09-04 | 株式会社イトーキ | Chair |
| DE202009006922U1 (en) | 2009-05-13 | 2010-09-23 | Bock 1 Gmbh & Co. Kg | synchronous mechanism |
| ES2636488T3 (en) * | 2012-09-05 | 2017-10-05 | Godrej & Boyce Mfg Co Ltd | Chair with adjustable back and seat |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04748Y2 (en) * | 1985-06-18 | 1992-01-10 | ||
| JPH08266363A (en) * | 1995-03-31 | 1996-10-15 | Okamura Corp | Seat for chair and tilting device for backrest |
-
1999
- 1999-11-09 JP JP31840099A patent/JP4500388B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04748Y2 (en) * | 1985-06-18 | 1992-01-10 | ||
| JPH08266363A (en) * | 1995-03-31 | 1996-10-15 | Okamura Corp | Seat for chair and tilting device for backrest |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001128786A (en) | 2001-05-15 |
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