JP2003135202A - Backrest device of chair - Google Patents
Backrest device of chairInfo
- Publication number
- JP2003135202A JP2003135202A JP2001336187A JP2001336187A JP2003135202A JP 2003135202 A JP2003135202 A JP 2003135202A JP 2001336187 A JP2001336187 A JP 2001336187A JP 2001336187 A JP2001336187 A JP 2001336187A JP 2003135202 A JP2003135202 A JP 2003135202A
- Authority
- JP
- Japan
- Prior art keywords
- back shell
- slit
- chair
- backrest device
- shell
- 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
Links
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、後傾に伴ってラン
バーサポート機能を発揮しうるようにした椅子の背もた
れ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair backrest device capable of exhibiting a lumbar support function along with tilting backward.
【０００２】[0002]
【従来の技術】背もたれを後傾させるのに伴って、 そ
のランバーサポート部分を相対的に前向突出させること
により、ランバーサポート機能を顕著に発揮させるよう
にした背もたれ装置としては、幾多のものが既に知られ
ている。2. Description of the Related Art As a backrest is tilted backward, the lumbar support portion is relatively projected forward so that the lumbar support function is remarkably exhibited. Already known.
【０００３】[0003]
【発明が解決しようとする課題】しかも、従来のランバ
ーサポート機能を有する背もたれ装置は、いずれも、構
造が複雑であるか、部品点数が多くて、製作が面倒であ
るとともにコスト高であり、かつ廃棄処分等の際の分解
が面倒であった。In addition, all of the conventional backrest devices having the lumbar support function are complicated in structure or have a large number of parts, which is troublesome to manufacture and costly. Disassembly at the time of disposal was troublesome.
【０００４】本発明は、構造が簡単で、部品点数が少
く、しかも作動が確実な、ランバーサポート機能を有す
る椅子の背もたれ装置を提供することを目的とするもの
である。It is an object of the present invention to provide a chair backrest device having a lumber support function, which has a simple structure, a small number of parts, and a reliable operation.
【０００５】[0005]
【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) 座の後方において立上がる背フレームの上部に、
上下方向の中間部において、前後方向に弾性屈曲可能と
した背シェルを、その屈曲可能部よりも上方において、
左右軸まわりに回動可能に取付け、かつ背シェルの下部
を、前記背フレームの下部に、上下摺動可能に係止す
る。According to the present invention, the above problems can be solved as follows. (1) On the upper part of the back frame that stands up behind the seat,
At the intermediate portion in the up-down direction, the back shell elastically bendable in the front-rear direction is provided above the bendable portion.
The lower part of the back shell is attached to the lower part of the back frame so as to be vertically slidable.
【０００６】(２) 上記(１)項において、背シェルの上
下方向の中間部に、背シェルを前後方向に弾性屈曲可能
とするための薄肉部を設ける。(2) In the above item (1), a thin portion for elastically bending the back shell in the front-back direction is provided in the vertical middle portion of the back shell.
【０００７】(３) 上記(１)項または(２)項において、
背シェルの上下方向の中間部に、背シェルを前後方向に
弾性屈曲可能とするための波形部を設ける。(3) In the above item (1) or item (2),
A corrugated portion for elastically bending the back shell in the front-rear direction is provided in the vertical middle portion of the back shell.
【０００８】(４) 上記(１)項または(２)項において、
背シェルの上下方向の中間部に、背シェルを前後方向に
弾性屈曲可能とするための多数の小孔を設ける。(4) In the above item (1) or (2),
A large number of small holes for elastically bending the back shell in the front-back direction are provided in the vertical middle portion of the back shell.
【０００９】(５) 上記(１)項または(２)項において、
背シェルの上下方向の中間部に、背シェルを前後方向に
弾性屈曲可能とするためのスリットを設ける。(5) In the above item (1) or (2),
A slit for elastically bending the back shell in the front-rear direction is provided in the vertical middle portion of the back shell.
【００１０】(６) 上記(５)項において、スリットを、
正面視Ｕ字形のものとする。(6) In the above item (5), the slit is
It shall be U-shaped when viewed from the front.
【００１１】(７) 上記(６)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。(7) In the above item (6), a restraint means for preventing the inner portion of the U-shaped slit in the back shell from protruding excessively forward with respect to the outer portion thereof. Is provided at an appropriate position of the slit.
【００１２】(８) 上記(７)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。(8) In the above item (7), the restraint means is
The flexible piece connects the inner part and the outer part of the slit in the back shell.
【００１３】(９) 上記(７)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。(9) In the above item (7), the restraint means is
The elastic piece connects the inner part and the outer part of the slit in the back shell.
【００１４】(10) 上記(７)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。(10) In the above item (7), the restraint means is
A U-shaped connecting piece that connects the inner portion and the outer portion of the slit in the back shell and faces forward.
【００１５】(11) 上記(１)〜(10)項のいずれかにおい
て、背フレームに、背フレームが、左右１対の縦杆を備
え、背シェルの下部両側に、各縦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
係合片を設ける。(11) In any one of the above items (1) to (10), the back frame is provided with a pair of left and right vertical rods, and the vertical rods and upper and lower slides are provided on both lower sides of the back shell. An engagement piece is provided that is movably engaged and that faces toward the side and that has an end curved forward.
【００１６】(12) 上記(１)〜(11)項のいずれかに、背
フレームが、左右１対の縦杆を備え、両縦杆の上部同士
を連結する横杆に、背シェルの上部を、左右軸まわりに
回動可能に取付ける。(12) In any one of the above items (1) to (11), the back frame is provided with a pair of left and right vertical rods, and a horizontal rod connecting the upper portions of both vertical rods to the upper portion of the back shell. Is attached so as to be rotatable around the left and right axes.
【００１７】[0017]
【発明の実施の形態】図１において、(１)は、図示を省
略した座の後方において立上がる背フレームにおける左
右の縦杆であり、上下方向の中間部(1a)において、前向
くの字形に僅かに屈曲され、かつ上端部同士は、横杆
(２)をもって連結されている。BEST MODE FOR CARRYING OUT THE INVENTION In FIG. 1, (1) is the left and right vertical rods in a back frame that stands up behind a seat (not shown), and is a forward-facing character in the vertical middle portion (1a). Slightly bent, and the upper ends are
They are connected with (2).
【００１８】(３)は、硬質の合成樹脂板もしくは金属板
からなる背シェルで、側断面形が前向くの字形をなし
（平板状であってもよい）、かつ上下方向の中間部(3a)
において、前後方向に弾性屈曲可能とされている。(3) is a back shell made of a hard synthetic resin plate or a metal plate, and has a side cross-sectional shape that faces forward (may be a flat plate) and has a vertical middle portion (3a). )
In, the elastic bending is possible in the front-back direction.
【００１９】背シェル(３)を、その上下方向の中間部(3
a)において前後方向に弾性屈曲しうるようにするために
は、次のような弱化手段が考えられる。
（ａ）要所に、薄肉部を設ける（請求項２記載の発明、
図示略）。
（ｂ）要所に、波形部を設ける（請求項３記載の発明、
図示略）。
（ｃ）要所に、多数の小孔を設ける（請求項４記載の発
明）。
（ｄ）要所に、上下方向もしくは左右方向その他のスリ
ットを設ける（請求項５記載の発明、図示略）。
（ｅ）前項のスリットを、正面視Ｕ字形のものとする
（請求項６記載の発明）。The back shell (3) is provided with a vertical middle portion (3
In order to enable elastic bending in the front-back direction in a), the following weakening means can be considered. (A) A thin portion is provided at a key portion (the invention according to claim 2,
(Not shown). (B) A corrugated portion is provided at a key portion (the invention according to claim 3
(Not shown). (C) A large number of small holes are provided at important points (the invention according to claim 4). (D) A slit in the vertical direction, the horizontal direction, or the like is provided in a key portion (the invention according to claim 5, not shown). (E) The slit in the preceding paragraph is U-shaped in front view (the invention according to claim 6).
【００２０】図示した実施の形態においては、背シェル
(３)を、その上下方向の中間部(3a)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３に示すよう
に、背シェル(３)の上下方向の中間部(3a)に、正面から
見て、浅いＵ字形のスリット(４)を切ってある。In the illustrated embodiment, the back shell
In order to allow (3) to elastically bend in the front-rear direction at the vertical middle part (3a), as shown in FIG. 3, the vertical middle part (3a) of the back shell (3) is shown. As seen from the front, a shallow U-shaped slit (4) is cut.
【００２１】しかして、背シェル(３)が前記横杆(２)の
まわりに後傾して、背シェル(３)における正面視Ｕ形の
スリット(４)の外方部分(６)が後向きに湾曲した際、ス
リット(４)の内方部分(５)も、外方部分(６)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(４)の
下辺の中央部において、前記内方部分(５)と外方部分
(６)とは、前後方向の拘束手段をもって連結されている
（請求項７記載の発明）。Therefore, the back shell (3) is tilted backward around the lateral rod (2), and the outer portion (6) of the U-shaped slit (4) in the front shell (3) is directed rearward. In order to allow the inner part (5) of the slit (4) to be deformed by following the outer part (6) to some extent when curved to the above, in the central part of the lower side of the slit (4), Inner part (5) and outer part
(6) is connected by front-rear restraint means (the invention according to claim 7).
【００２２】この拘束手段は、可撓片（請求項８記載の
発明）、もしくは弾性片（請求項９記載の発明）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(５)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(７)としてあり、その下片の前端
を、前記外方部分(６)の中央部上縁に設けた左右方向を
向く係止孔(８)に係止してある（請求項１０記載の発
明）。The restraining means may be a flexible piece (the invention according to claim 8) or an elastic piece (the invention according to claim 9), but in the illustrated embodiment, the inner portion is formed. The upper end is fastened to the lower edge of the central part of (5), the front view U
There is a vertical connecting piece (7), and the front end of the lower piece is locked to a locking hole (8) provided in the upper edge of the central portion of the outer portion (6) and directed in the left-right direction. There is (the invention according to claim 10).
【００２３】背シェル(３)の下部両側、すなわちスリッ
ト(４)の外方部分(６)の下部に、背もたれの縦杆(１)
(１)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(９)(９)を、背シェル(３)
を切起こすことによって形成し、各係合片(９)を、縦杆
(１)に、後方から上下摺動可能に係合してある（請求項
１１記載の発明）。On both sides of the lower portion of the back shell (3), that is, on the lower portion of the outer portion (6) of the slit (4), a vertical rod (1) for the backrest is provided.
The side shell engaging pieces (9) and (9), which are curved so that the end portions thereof face forward, at approximately the same intervals as in (1), are attached to the back shell (3).
Formed by cutting and raising each engaging piece (9),
It is engaged with (1) so as to be vertically slidable from the rear (the invention according to claim 11).
【００２４】背シェル(３)の上部背面は、左右の縦杆
(１)(１)の上端同士を連結する横杆(２)に、左右軸まわ
りに回動可能に支持されている（請求項１２記載の発
明）。The upper back surface of the back shell (3) is provided with right and left vertical rods.
(1) A horizontal rod (2) that connects the upper ends of (1) to each other is supported rotatably around the left and right axes (the invention of claim 12).
【００２５】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(３)
の背面における横杆(２)と対応する個所に、後方を向く
中空突起(10)を設け、横杆(２)と中空突起(10)へ締付ね
じ(11)を、若干の遊びをもって貫挿し、ナット(12)締め
することにより支持してある。従って背シェル(３)は、
締付ねじ(11)の遊びの範囲において、締付ねじ(11)の部
分を中心として、前後に傾動することができる。This support may be provided by axial pins pointing in the left-right direction, but in the embodiment shown the back shell (3).
A hollow protrusion (10) facing rearward is provided at a position corresponding to the horizontal rod (2) on the rear surface of the rod, and the tightening screw (11) is inserted into the horizontal rod (2) and the hollow protrusion (10) with some play. It is supported by inserting it and tightening the nut (12). Therefore, the back shell (3)
Within the play of the tightening screw (11), it can tilt back and forth around the part of the tightening screw (11).
【００２６】なお、背シェル(３)の前面には、適宜のク
ッション体や外皮が張設されるが、図においては、これ
らを省略してある。An appropriate cushion body or outer skin is stretched on the front surface of the back shell (3), but these are omitted in the drawing.
【００２７】着座者が背シェル(３)を後方へ押すと、背
シェル(３)は、横杆(２)への取付部を中心として、後方
へ傾動する。When the seated person pushes the back shell (3) rearward, the back shell (3) tilts rearward about the attachment portion to the lateral rod (2).
【００２８】これに伴い、背シェル(３)における横杆
(２)の下方部分は、前向きに傾動しようとするが、背シ
ェル(３)の下端部は、縦杆(１)に係合している係合片
(９)により、前方移動を拘束されているため、横杆(２)
の下方における背シェル(３)の上下方向の中間部(3a)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。Along with this, the horizontal rod in the back shell (3)
The lower part of (2) tends to tilt forward, but the lower end of the back shell (3) is engaged with the vertical rod (1).
Since the forward movement is restricted by (9), the horizontal rod (2)
An intermediate portion (3a) of the back shell (3) in the up-and-down direction in the lower part of the ridge largely protrudes forward and strongly presses the lumbar region of the seated person, thereby exerting a strong lumbar support effect.
【００２９】しかして、実施形態においては、背シェル
(３)に正面視Ｕ形のスリット(４)を設け、係合片(９)外
方部分(６)の下端部に前記係合片(９)を設けてあるた
め、背シェル(３)の後方傾動に伴い、スリット(４)の内
方部分(５)の下部は、その外方部分(６)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。Thus, in the embodiment, the back shell
The U-shaped slit (4) in front view is provided in (3), and the engaging piece (9) is provided at the lower end of the outer portion (6) of the engaging piece (9). With the rearward tilting, the lower part of the inner part (5) of the slit (4) projects forward more than the outer part (6), and strongly and elastically presses the lumbar region of the seated person. It is comfortable.
【００３０】なお、上記した背シェル(３)のスリット
(４)の内方部分(５)の前向突出量は、接続片(７)その他
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。The slit of the back shell (3) described above
Since the amount of forward projection of the inner portion (5) of (4) is restricted to a preferable amount by the connecting piece (7) and other restraining means,
It does not cause discomfort to the seated person and does not excessively damage the stretched cushion body or outer skin.
【００３１】[0031]
【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：−背シェルを後方へ傾動させると、背シェル
の上下方向の中間部は前方へ大きく突出して、着座者の
腰部を押圧する。Next, the main effects peculiar to the invention described in each claim will be listed. Claim 1: -When the back shell is tilted rearward, the intermediate portion of the back shell in the vertical direction largely protrudes forward and presses the waist of the seated person.
【００３２】請求項２〜６：−背シェルの上下方向の中
間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。Claims 2 to 6: -The force required to tilt the back shell backward for projecting the vertical middle portion of the back shell to the front can be small.
【００３３】請求項７：−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す
る。Claim 7: -The inner part of the U-shaped slit largely projects forward relative to the back shell due to the rearward tilting.
【００３４】請求項８〜１０：−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。Claims 8 to 10: The amount of forward projection of the inner portion of the U-shaped slit due to the rearward tilting of the back shell can be appropriately determined.
【００３５】請求項１１：−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。Claim 11: -With the rearward tilting of the back shell,
The means for engaging the lower part of the back shell with the lower part of the back frame in a vertically slidable manner in order to project the lower part forward is simplified.
【００３６】請求項１２：− 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。A twelfth aspect of the present invention is to simplify the structure for attaching the upper part of the back frame to the back frame so as to be rotatable about the left and right axes.
【図１】本発明の実施形態を、クッション体および外皮
を除いて例示する無負荷状態の側断面図である。FIG. 1 is a side sectional view in an unloaded state illustrating an embodiment of the present invention excluding a cushion body and an outer cover.
【図２】同じく前方から荷重が掛った場合の図１と同様
の側断面図である。FIG. 2 is a side sectional view similar to FIG. 1 when a load is applied from the front as well.
【図３】同じく後方斜視図である。FIG. 3 is a rear perspective view of the same.
(１)縦杆 (1a)中間部 (２)横杆 (３)背シェル (3a)中間部 (４)スリット (５)スリットの内方部分 (６)スリットの外方部分 (７)接続片 (８)係止孔 (９)係合片 (10)中空突起 (11)締付ねじ (12)ナット (1) Vertical rod (1a) Middle part (2) Yokomo (3) Back shell (3a) Middle part (4) Slit (5) Inner part of slit (6) Outer part of the slit (7) Connection piece (8) Locking hole (9) Engagement piece (10) Hollow protrusion (11) Tightening screw (12) Nut
Claims (12)
上部に、上下方向の中間部において、前後方向に弾性屈
曲可能とした背シェルを、その屈曲可能部よりも上方に
おいて、左右軸まわりに回動可能に取付け、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
係止したことを特徴とする椅子の背もたれ装置。1. A back shell, which is elastically bendable in the front-rear direction at an intermediate portion in the vertical direction, is provided at an upper portion of a back frame that stands up behind the seat, and is rotated around the left and right axes above the bendable portion. A backrest device for a chair, wherein the backrest device is movably mounted, and a lower portion of a back shell is vertically slidably engaged with a lower portion of the back frame.
ルを前後方向に弾性屈曲可能とするための薄肉部を設け
たことを特徴とする請求項１記載の椅子の背もたれ装
置。2. The chair backrest apparatus according to claim 1, wherein a thin portion for elastically bending the back shell in the front-rear direction is provided at an intermediate portion in the up-down direction of the back shell.
ルを前後方向に弾性屈曲可能とするための波形部を設け
たことを特徴とする請求項１または２記載の椅子の背も
たれ装置。3. The backrest device for a chair according to claim 1, wherein a corrugated portion for elastically bending the back shell in the front-back direction is provided in an intermediate portion of the back shell in the vertical direction.
ルを前後方向に弾性屈曲可能とするための多数の小孔を
設けたことを特徴とする請求項１または２記載の椅子の
背もたれ装置。4. The backrest of a chair according to claim 1, wherein a large number of small holes for elastically bending the back shell in the front-back direction are provided in the vertical middle portion of the back shell. apparatus.
ルを前後方向に弾性屈曲可能とするためのスリットを設
けたことを特徴とする請求項１または２記載の椅子の背
もたれ装置。5. The backrest device for a chair according to claim 1, wherein a slit is provided at an intermediate portion of the back shell in the vertical direction so that the back shell can be elastically bent in the front-back direction.
ことを特徴とする請求項５記載の椅子の背もたれ装置。6. The backrest device for a chair according to claim 5, wherein the slit is U-shaped in a front view.
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
トの適所に設けたことを特徴とする請求項６記載の椅子
の背もたれ装置。7. A restraint means for preventing the inner portion of the U-shaped slit in the front shell from protruding excessively forward with respect to the outer portion thereof is provided at a proper position of the slit. The backrest device for a chair according to claim 6, wherein:
の内方部分と外方部分とを連結する可撓片であることを
特徴とする請求項７記載の椅子の背もたれ装置。8. The backrest device for a chair according to claim 7, wherein the restraint means is a flexible piece connecting the inner portion and the outer portion of the slit in the back shell.
の内方部分と外方部分とを連結する弾性片であることを
特徴とする請求項７記載の椅子の背もたれ装置。9. The backrest device for a chair according to claim 7, wherein the restraint means is an elastic piece for connecting an inner portion and an outer portion of the slit in the back shell.
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
接続片であることを特徴とする請求項７記載の椅子の背
もたれ装置。10. The chair backrest device according to claim 7, wherein the restraint means is a U-shaped connecting piece which faces forward and connects the inner portion and the outer portion of the slit in the back shell.
え、背シェルの下部両側に、各縦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
係合片を設けたことを特徴とする請求項１〜１０のいず
れかに記載の椅子の背もたれ装置。11. The back frame is provided with a pair of left and right vertical rods, and is directed to both sides of a lower portion of the back shell so as to be laterally engaged with the respective vertical rods so as to be vertically slidable, and its end portion is directed forward. The chair backrest device according to any one of claims 1 to 10, further comprising a curved engagement piece.
え、両縦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ことを特徴と
する請求項１〜１１のいずれかに記載の椅子の背もたれ
装置。12. The back frame comprises a pair of left and right vertical rods, and the upper portion of the back shell is attached to a horizontal rod connecting the upper portions of both vertical rods so as to be rotatable about the left and right axes. The chair backrest device according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001336187A JP3834500B2 (en) | 2001-11-01 | 2001-11-01 | Chair backrest device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001336187A JP3834500B2 (en) | 2001-11-01 | 2001-11-01 | Chair backrest device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003135202A true JP2003135202A (en) | 2003-05-13 |
| JP3834500B2 JP3834500B2 (en) | 2006-10-18 |
Family
ID=19151052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001336187A Expired - Fee Related JP3834500B2 (en) | 2001-11-01 | 2001-11-01 | Chair backrest device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3834500B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014008253A (en) * | 2012-06-29 | 2014-01-20 | Okamura Corp | Chair |
| JP2016137021A (en) * | 2015-01-26 | 2016-08-04 | 株式会社岡村製作所 | Cover member for backrest, backrest, and chair |
-
2001
- 2001-11-01 JP JP2001336187A patent/JP3834500B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014008253A (en) * | 2012-06-29 | 2014-01-20 | Okamura Corp | Chair |
| JP2016137021A (en) * | 2015-01-26 | 2016-08-04 | 株式会社岡村製作所 | Cover member for backrest, backrest, and chair |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3834500B2 (en) | 2006-10-18 |
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