JP3834502B2 - Reclining chair - Google Patents
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- JP3834502B2 JP3834502B2 JP2001339985A JP2001339985A JP3834502B2 JP 3834502 B2 JP3834502 B2 JP 3834502B2 JP 2001339985 A JP2001339985 A JP 2001339985A JP 2001339985 A JP2001339985 A JP 2001339985A JP 3834502 B2 JP3834502 B2 JP 3834502B2
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- back shell
- reclining chair
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Description
【０００１】
【発明の属する技術分野】
本発明は、背もたれを後方へ傾動させるのに伴って、着座者の腰部を後方から押圧しうるようにしたリクライニング椅子に関する。
【０００２】
【従来の技術】
着座者が、その背で背もたれを押して後傾させると、適宜のリンク機構等を介して、座の後部が下降するようにしたリクライニング椅子は周知である。
【０００３】
【発明が解決しようとする課題】
上記のような従来のリクライニング椅子においては、背もたれを大きく後方へ傾動させればさせるほど、着座者の腰部と背もたれとの間隔は大となり、着座者の上半身の重量の大部分が、専らその肩部を介して、背もたれにより支持されることとなり、期待したほどの快適感が得られないのが実情である。
【０００４】
この傾向は、背もたれを大きく後傾させるほど、背もたれと着座者との間隔が大となるので、顕著となる。
【０００５】
本発明は、従来のものとは逆に、着座者が背もたれを背で押して、これを大きく後傾させればさせるほど、着座者の腰部が弾性的に押圧されて、従来にない快適感が得られるようにしたリクライニング椅子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、上記目的は、次のようにして解決される。
(１)脚体の上端における支基に、座の後方において立上がる背フレームの下部における前端を、左右軸まわりに回動しうるように枢支し、前記背フレームの上部に、合成樹脂製の背シェルにおける上下方向の中間部を、左右軸まわりに回動自在に取付け、前記背シェルにおける背フレームへの枢支部の下方に、前後方向に弾性屈曲可能な屈曲可能部を設け、かつ背シェルの下部を、前記背フレームの下部に、上下摺動可能に支持することにより、前記背シェルの上部を後方へ傾動させたとき、前記屈曲可能部が前向に傾動して、着座者の腰部を押圧するようにする。
【０００７】
(２)上記(１)項において、脚体の上端における支基の前部に、座の前端を、左右軸まわりに回動しうるように枢支するとともに、その後方において、前記支基に、背フレームの下部における前方を向く側杆の前端を、左右軸まわりに回動しうるように枢支し、かつこの枢支部のやや後方において、前記側杆に座の後部を、左右軸まわりに回動しうるように枢支することにより、背フレームの後傾に伴い、座の後部が下傾するようにし、さらに前記背フレームに、適宜の手段により、弾性前向回動力を付与したものとする。
【０００８】
(３)上記(１)または(２)項において、背シェルにおける屈曲可能部を、背シェルの下端よりやや上方に設けた、正面視Ｕ字形のスリットとする。
【０００９】
(４)上記(３)項において、背シェルにおける正面視Ｕ字形のスリットの内方部分が、その外方部分に対して、過度に前向きに突出するのを防止するための拘束手段を、前記スリットの適所に設ける。
【００１０】
(５)上記(４)項において拘束手段を、背シェルにおけるスリットの内方部分と外方部分とを連結する可撓片とする。
【００１１】
(６)上記(４)項において、拘束手段を、背シェルにおけるスリットの内方部分と外方部分とを連結する弾性片とする。
【００１２】
(７)上記(４)項において、拘束手段を、背シェルにおけるスリットの内方部分と外方部分とを連結する前方を向くＵ形の接続片とする。
【００１３】
(８)上記(１)〜(７)項のいずれかにおいて、背フレームを、左右１対の側杆を備え、背シェルの下部両側に、各側杆と上下摺動可能に係合するための側方を向き、かつ端部が前向きに湾曲する係合片を設けたものとする。
【００１４】
(９)上記(１)〜(８)項のいずれかにおいて、背フレームを、左右１対の側杆を備え、両側杆の上部同士を連結する横杆に、背シェルの上部を、左右軸まわりに回動可能に取付けたものとする。
【００１５】
【発明の実施の形態】
本発明のリクライニング椅子は、大まかに言って、脚体(10)、背フレーム(20)、座(30)および背もたれ(40)からなっている。
【００１６】
脚体(10)は、放射状脚(11)の中心より立設された脚柱(12)の上端に、前後方向に長い支基(13)を回転自在に取付けてなり、支基(13)の前端には、下向きに凹入する前後に長い嵌孔(14)が設けられ、支基(13)における脚杆(12)のやや前方に当たる個所には、下向きに半円状に凹入する嵌孔(15)が設けられている。
【００１７】
背フレーム(20)は、前向Ｌ状の左右の側杆(21)(21)の上端同士、および下部前端同士を、それぞれ、適宜断面の横杆(22)および断面円形の支持杆(23)で連結し、かつ支持杆(23)の後方において、左右の側杆(21)(21)を連結板(24)で連結したもので、連結板(24)の前部には、前記支基(13)の後部へ上方から嵌合しうる凹入孔(25)が前方から設けられ、かつ凹入孔(25)の両側方には、軸受金具(26)(26)が、上方より取付けうるようになっている。
【００１８】
座(30)は、方形台枠(31)と、その上に載置固定されるクッション体(32)とからなり、台枠(31)の前後の断面円形の横杆(33)(34)は、それぞれ、支基(13)の前端の嵌孔(14)(14)、並びに背フレーム(20)における前記軸受金具(26)(26)に枢支されている。
【００１９】
クッション体(32)は、台枠(31)の上面に、前後移動可能に、かつ適宜の位置で固定しうるようにして取付けられるが、このことは、本発明とは直接の関係はなく、またそれ自体公知であるので、その説明は省略する。
【００２０】
支基(13)の後端と、背フレーム(20)における連結板(24)の後部とにまたがって、ガススプリング(16)が装着されている。
【００２１】
従って、ガススプリング(16)に抗して背フレーム(20)を後傾させると、それに伴い、座(30)の後部は自動的に下傾するので快適である。
【００２２】
背もたれ(40)は、上下方向の中間部を背フレーム(20)の上端の横杆(22)の前面に、左右軸まわりに回動しうるようにして枢支した背シェル(41)の前面に、図示を省略したクッション体を当着したものである。
【００２３】
背シェル(41)には、背フレーム(20)の上端の横杆(22)との枢支部の下方において、前後方向に弾性屈曲しうるようにするために、図５に示すように、背シェル(41)の下端よりやや上方に、正面から見て、浅いＵ字形のスリット(42)を切ってある。
【００２４】
しかして、背シェル(41)が前記横杆(22)のまわりに後傾して、背シェル(41)における正面視Ｕ形のスリット(42)の外方部分(43)が後向きに湾曲した際、スリット(42)の内方部分(44)も、外方部分(43)にある程度追随して変形しうるようにするために、スリット(42)の下辺の中央部において、前記内方部分(44)と外方部分(43)とは、前後方向の拘束手段をもって連結されている。
【００２５】
この拘束手段は、可撓片、もしくは弾性片であってもよいが、図示の実施の形態においては、前記内方部分(44)の中央部下縁に上端が止着された、側面視前向Ｕ形の縦方向の接続片(45)としてあり、その下片の前端を、前記外方部分(43)の中央部上縁に設けた左右方向を向く係止孔(46)に係止してある。
【００２６】
背シェル(41)の下部両側、すなわちスリット(42)の外方部分(43)の下部に、背フレーム(20)の左右の側杆(21)(21)の間隔とほぼ同間隔をもって、端部が前方を向くように湾曲する横向きの係合片(47)(47)を、背シェル(41)を切起こすことによって形成し、各係合片(47)を、側杆(21)に、後方から上下摺動可能に係合してある。
【００２７】
背シェル(41)の上部背面は、前述のように、背フレーム(20)の上端の横杆(22)に、左右軸まわりに回動可能に支持されている。
【００２８】
この支持は、左右方向を向く軸ピンで行ってもよいが、図示の実施態様においては、背シェル(41)の背面における横杆(22)と対応する個所に、後方を向く中空突起(48)を設け、横杆(22)と中空突起(48)へ締付ねじ(49)を、若干の遊びをもって貫挿し、ナット(50)締めすることにより支持してある。従って背シェル(41)は、締付ねじ(49)の遊びの範囲内おいて、締付ねじ(49)の部分を中心として、前後に傾動することができる。
【００２９】
着座者が背シェル(41)を後方へ押すと、背フレーム(20)はガススプリング(16)に抗して後方へ弾性的に傾動するとともに、背シェル(41)は、着座者の背の荷重の掛け方いかんに応じて、横杆(22)への取付部を中心として、後方へ傾動する。
【００３０】
これに伴い、背シェル(41)における横杆(22)の下方部分は、前向きに傾動しようとするが、背シェル(41)の下端部は、側杆(21)に係合している係合片(47)により、前方移動を拘束されているため、横杆(22)の下方における背シェル(41)の上下方向の中間部よりやや下方に位置する屈曲可能部(41a)は大きく前方へ突出し、着座者の腰部を強く押圧して、強いランバーサポート効果を発揮する。
【００３１】
しかして、背シェル(41)に正面視Ｕ形のスリット(42)を設け、その外方部分(43)の下端部に前記係合片(47)を設けてあるため、背シェル(41)の後方傾動に伴い、スリット(42)の内方部分(44)の下部は、その外方部分(43)よりも大きく前方へ突出し、着座者の腰部を、強力に弾性的に押圧することとなり快適である。
【００３２】
しかも本発明のリクライニング椅子においては、背もたれを後傾させればさせるほど、着座者の腰部は強く押されるので、従来の同種のものに比して、格段に快適である。
【００３３】
なお、上記した背シェル(41)のスリット(42)の内方部分(44)の前向突出量は、接続片(45)その他適宜の拘束手段により、好ましい量に規制されているので、着座者に不快感を与えることはなく、また張設されているクッション体や外皮を過度に傷めることもない。
【００３４】
【発明の効果】
次に、各請求項に記載の発明に特有の主要な効果を列記する。
請求項１：−背もたれの上部を後方へ傾動させると、背シェルの上下方向の中間部よりやや下方の屈曲可能部は前方へ大きく突出して、着座者の腰部を押圧するので快適である。
【００３５】
請求項２：−背もたれを後方へ傾動させると、座の後部は下傾し、かつ背シェルの上下方向の中間部よりやや下方の屈曲可能部は前方へ大きく突出して、着座者の腰部を押圧するので快適である。
【００３６】
請求項３：−背シェルの屈曲可能部を前方へ突出させるために要する背シェルを後方へ傾動させるための力は小さくて済む。
【００３７】
請求項４：−背シェルの後傾に伴い、Ｕ字形スリットの内方部分が、大きく相対的に前方へ突出して、着座者の腰部を押すので快適である。
【００３８】
請求項５〜７：−背シェルの後傾に伴うＵ字形スリットの内方部分の前向突出量を、適切に定めることができる。
【００３９】
請求項８：−背シェルの後傾に伴って、その下部を前方へ突出させるために、背シェルの下部を背フレームの下部に上下摺動可能に係合する手段が簡単となる。
【００４０】
請求項９：−背フレームに対し、背フレームの上部を左右軸まわりに回動可能に取付けるための構成が簡単になる。
【図面の簡単な説明】
【図１】 本発明の実施形態を、背もたれのクッション体および外皮、並びに背フレームの後部カバーを除いて示す無負荷状態の側断面図である。
【図２】 同じく前方から背フレームに荷重が掛った場合の図１と同様の側断面図である。
【図３】 図１の実施形態の分解斜視図である。
【図４】 背フレームの上部と背もたれを示す一部破断側面図である。
【図５】 背フレームの上部と背もたれの後方斜視図である。
【符号の説明】
(10)脚体
(11)放射状脚
(12)脚柱
(13)支基
(14)(15)嵌孔
(16)ガススプリング
(20)背フレーム
(21)側杆
(22)横杆
(23)支持杆
(24)連結板
(25)凹入孔
(26)軸受金具
(30)座
(31)台枠
(32)クッション体
(33)(34)横杆
(40)背もたれ
(41)背シェル
(41a)屈曲可能部
(42)スリット
(43)外方部分
(44)内方部分
(45)接続片
(46)係止孔
(47)係合片
(48)中空突起
(49)締付ねじ
(50)ナット[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reclining chair that can press a waist of a seated person from behind as the backrest is tilted backward.
[0002]
[Prior art]
A reclining chair is known in which when a seated person pushes the backrest with his back and tilts backward, the rear part of the seat is lowered via an appropriate link mechanism or the like.
[0003]
[Problems to be solved by the invention]
In conventional reclining chairs as described above, the greater the backrest is tilted backwards, the greater the distance between the seated person's waist and backrest, and the majority of the weight of the seated person's upper body is exclusively its shoulder. The actual situation is that it is supported by the backrest through the part, and the comfortable feeling as expected cannot be obtained.
[0004]
This tendency becomes more prominent because the distance between the backrest and the seated person becomes larger as the backrest is largely inclined backward.
[0005]
The present invention, contrary to the conventional one, the more the seat occupant pushes the back of the back and tilts it backwards, the more the seat occupant's lower back is elastically pressed. The purpose is to provide a reclining chair that can be obtained.
[0006]
[Means for Solving the Problems]
According to the present invention, the above object is solved as follows.
(1) The front end of the lower part of the back frame that stands up behind the seat is pivotally supported on the support base at the upper end of the leg so that it can be rotated around the left and right axes , and the upper part of the back frame is made of synthetic resin. An intermediate portion in the vertical direction of the back shell of the back shell is rotatably attached around the left and right axis, and a bendable portion that can be elastically bent in the front-rear direction is provided below the pivotal support portion of the back shell to the back frame. By supporting the lower part of the shell on the lower part of the back frame so as to be vertically slidable , when the upper part of the back shell is tilted backward, the bendable part tilts forward, Try to press the waist.
[0007]
(2) In the above item (1), the front portion of the support base at the upper end of the leg, the front end of the seat, as well as pivotally supported as to be able to rotate about lateral axis at its rear, said support base The front end of the side lamp facing forward in the lower part of the back frame is pivotally supported so as to be able to rotate around the left and right axis, and the rear part of the seat is placed around the left and right axis slightly behind this pivot part. As the back frame tilts backward, the rear part of the seat tilts downward, and elastic force is applied to the back frame by appropriate means. Shall.
[0008]
(3) In the above item (1) or (2), the bendable portion of the back shell is a slit having a U-shape in front view provided slightly above the lower end of the back shell .
[0009]
(4) In the above (3), the restraining means for preventing the inner portion of the U-shaped slit in the back shell from projecting frontward excessively with respect to the outer portion of the slit, Install it at the appropriate position of the slit.
[0010]
(5) In the above item (4), the restraining means is a flexible piece that connects the inner part and the outer part of the slit in the back shell.
[0011]
(6) In the above item (4), the restraining means is an elastic piece that connects the inner part and the outer part of the slit in the back shell.
[0012]
(7) In the above item (4), the restraining means is a U-shaped connecting piece that faces the front and connects the inner part and the outer part of the slit in the back shell.
[0013]
(8) In any one of the above items (1) to (7), the back frame is provided with a pair of left and right side rods, and is engaged with each side rod so as to be vertically slidable on both lower sides of the back shell. It is assumed that there is provided an engagement piece that faces the side of the head and whose end is curved forward.
[0014]
(9) In any one of the above items (1) to (8), the back frame is provided with a pair of left and right side rods, a horizontal rod connecting the upper portions of both side rods, and the upper portion of the back shell is It is assumed that it can be pivoted around.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
The reclining chair of the present invention roughly comprises a leg (10), a back frame (20), a seat (30) and a backrest (40).
[0016]
The leg (10) is configured by rotatably attaching a long support base (13) in the front-rear direction to the upper end of a pedestal (12) erected from the center of the radial leg (11). At the front end, a long fitting hole (14) is provided before and after being recessed downward, and the portion of the support base (13) that is slightly forward of the leg rod (12) is recessed semicircularly downward. A fitting hole (15) is provided.
[0017]
The back frame (20) is formed by connecting the upper ends of the left and right side bars (21), (21) of the forward L shape and the lower front ends, respectively, with a horizontal cross section (22) and a circular cross section support bar (23 ) And on the rear side of the support rod (23), the left and right side rods (21) and (21) are coupled by the coupling plate (24). A recessed hole (25) that can be fitted to the rear part of the base (13) from above is provided from the front, and bearing brackets (26) and (26) are provided on both sides of the recessed hole (25) from above. It can be attached.
[0018]
The seat (30) is composed of a rectangular frame (31) and a cushion body (32) placed and fixed thereon, and is a circular cross-section (33) (34) having a circular cross section before and after the frame (31). Are pivotally supported by the fitting holes (14), (14) at the front end of the support base (13) and the bearing fittings (26), (26) in the back frame (20).
[0019]
The cushion body (32) is attached to the upper surface of the base frame (31) so as to be movable back and forth, and can be fixed at an appropriate position, but this is not directly related to the present invention. Further, since it is known per se, its description is omitted.
[0020]
A gas spring (16) is mounted across the rear end of the support base (13) and the rear portion of the connecting plate (24) in the back frame (20).
[0021]
Therefore, when the back frame (20) is tilted backward against the gas spring (16), the rear portion of the seat (30) is automatically tilted accordingly, which is comfortable.
[0022]
The backrest (40) is the front surface of the back shell (41) pivoted so that it can rotate around the left and right axis with the middle part in the vertical direction on the front surface of the recumbent (22) at the upper end of the back frame (20). Further, a cushion body (not shown) is attached.
[0023]
As shown in FIG. 5, the back shell (41) is provided with a back as shown in FIG. 5 so that the back shell (41) can be elastically bent in the front-rear direction below the pivot (22). A shallow U-shaped slit (42) is cut slightly above the lower end of the shell (41) when viewed from the front.
[0024]
Thus, the back shell (41) tilts backward around the recumbent ridge (22), and the outer portion (43) of the U-shaped slit (42) in the front view of the back shell (41) curves backward. In order to allow the inner portion (44) of the slit (42) to be deformed by following the outer portion (43) to some extent, the inner portion of the slit (42) is arranged at the center of the lower side. (44) and the outer portion (43) are connected by a restraining means in the front-rear direction.
[0025]
The restraining means may be a flexible piece or an elastic piece, but in the illustrated embodiment, the upper end is fixed to the lower edge of the central portion of the inner portion (44), and the front view is a front view. It is a U-shaped vertical connecting piece (45), and the front end of the lower piece is locked in the left and right locking hole (46) provided at the upper edge of the central part of the outer part (43). It is.
[0026]
At the both sides of the lower part of the back shell (41), that is, at the lower part of the outer part (43) of the slit (42), the edges are almost the same as the distance between the left and right side bars (21) (21) of the back frame (20) Side-engagement pieces (47) and (47) which are curved so that the portion faces forward are formed by raising the back shell (41), and each engagement piece (47) is formed on the side collar (21). It is engaged so that it can slide up and down from the rear.
[0027]
As described above, the upper rear surface of the back shell (41) is supported on the horizontal bar (22) at the upper end of the back frame (20) so as to be rotatable about the left and right axis.
[0028]
This support may be performed by a shaft pin facing in the left-right direction, but in the illustrated embodiment, a hollow projection (48) facing backward is provided at a position corresponding to the recumbent rib (22) on the back surface of the back shell (41). ), And a fastening screw (49) is inserted into the horizontal rod (22) and the hollow projection (48) with a little play, and is supported by tightening the nut (50). Accordingly, the back shell (41) can be tilted back and forth around the portion of the fastening screw (49) within the range of play of the fastening screw (49).
[0029]
When the seat occupant pushes the back shell (41) backward, the back frame (20) elastically tilts backward against the gas spring (16), and the back shell (41) moves to the back of the seat occupant. Depending on how the load is applied, it tilts backward with the attachment to the reed (22) as the center.
[0030]
Along with this, the lower part of the recumbent rib (22) in the back shell (41) tends to tilt forward, but the lower end of the back shell (41) engages with the side reed (21). Since the forward movement is restricted by the joint piece (47), the bendable part (41a) located slightly below the middle part in the vertical direction of the back shell (41) below the recumbent rib (22) is greatly forward. Protruding to the side, strongly pressing the waist of the seated person, exerts a strong lumbar support effect.
[0031]
Since the U-shaped slit (42) is provided in the back shell (41) and the engagement piece (47) is provided at the lower end of the outer portion (43), the back shell (41) The lower part of the inner part (44) of the slit (42) protrudes more forward than the outer part (43), and the waist of the seated person is strongly and elastically pressed. Comfortable.
[0032]
Moreover, in the reclining chair of the present invention, as the backrest is tilted backward, the waist of the seated person is pushed more strongly, so that it is much more comfortable than conventional ones.
[0033]
Note that the amount of forward protrusion of the inner portion (44) of the slit (42) of the back shell (41) described above is regulated to a preferable amount by the connecting piece (45) or other appropriate restraining means. It does not cause discomfort to the person and does not excessively damage the cushion body and outer skin that are stretched.
[0034]
【The invention's effect】
Next, the main effects peculiar to the invention described in each claim are listed.
Claim 1: When the upper part of the backrest is tilted backward, the bendable part slightly below the middle part in the vertical direction of the back shell protrudes greatly forward and presses the waist of the seated person, which is comfortable.
[0035]
Claim 2 : When the backrest is tilted rearward, the rear part of the seat tilts downward, and the bendable part slightly below the middle part in the vertical direction of the back shell protrudes forward and presses the waist of the seated person It is so comfortable.
[0036]
Claim 3: The force required to tilt the back shell to project the bendable portion of the back shell forward is small.
[0037]
According to the fourth aspect of the present invention, as the back shell is tilted backward, the inner portion of the U-shaped slit largely protrudes forward relatively and is comfortable because it pushes the waist of the seated person.
[0038]
Claims 5 to 7: The amount of forward protrusion of the inner part of the U-shaped slit accompanying the backward inclination of the back shell can be appropriately determined.
[0039]
According to the eighth aspect of the present invention, the means for engaging the lower portion of the back shell with the lower portion of the back frame so as to be vertically slidable is simplified in order to cause the lower portion of the back shell to protrude forward.
[0040]
Claim 9: The structure for attaching the upper part of the back frame to the back frame so as to be rotatable about the left-right axis is simplified.
[Brief description of the drawings]
FIG. 1 is a side sectional view in an unloaded state showing an embodiment of the present invention except for a cushion body and outer skin of a backrest and a rear cover of a back frame.
FIG. 2 is a side sectional view similar to FIG. 1 when a load is similarly applied to the back frame from the front.
FIG. 3 is an exploded perspective view of the embodiment of FIG.
FIG. 4 is a partially cutaway side view showing an upper part and a backrest of a back frame.
FIG. 5 is a rear perspective view of the upper portion of the back frame and the backrest.
[Explanation of symbols]
(10) Leg
(11) Radial legs
(12) pedestal
(13) Support base
(14) (15) Fitting hole
(16) Gas spring
(20) Back frame
(21) Side rod
(22) Yokohama
(23) Support rod
(24) Connecting plate
(25) Recessed hole
(26) Bearing bracket
(30) Seat
(31) Underframe
(32) Cushion body
(33) (34)
(40) Backrest
(41) Back shell
(41a) Bendable part
(42) Slit
(43) Outer part
(44) Inner part
(45) Connection piece
(46) Locking hole
(47) Engagement piece
(48) Hollow protrusion
(49) Tightening screw
(50) Nut
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001339985A JP3834502B2 (en) | 2001-11-05 | 2001-11-05 | Reclining chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001339985A JP3834502B2 (en) | 2001-11-05 | 2001-11-05 | Reclining chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003135204A JP2003135204A (en) | 2003-05-13 |
| JP3834502B2 true JP3834502B2 (en) | 2006-10-18 |
Family
ID=19154253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001339985A Expired - Fee Related JP3834502B2 (en) | 2001-11-05 | 2001-11-05 | Reclining chair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3834502B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7794017B2 (en) | 2005-08-18 | 2010-09-14 | Itoki Corporation | Chair having a unit to move a lumbar support |
| JP4919376B2 (en) * | 2005-08-23 | 2012-04-18 | 株式会社イトーキ | Chair with backrest |
| JP4960670B2 (en) * | 2006-08-31 | 2012-06-27 | 株式会社イトーキ | Chair |
| JP4950701B2 (en) * | 2007-02-28 | 2012-06-13 | 株式会社イトーキ | Chair |
| JP5508620B2 (en) * | 2009-08-19 | 2014-06-04 | 株式会社イトーキ | Chair |
| JP6185231B2 (en) * | 2012-11-14 | 2017-08-23 | 株式会社イトーキ | Chair |
| US20160135603A1 (en) * | 2013-06-06 | 2016-05-19 | Itoki Corporation | Chair |
-
2001
- 2001-11-05 JP JP2001339985A patent/JP3834502B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003135204A (en) | 2003-05-13 |
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