JP4189455B2 - Chair tension structure - Google Patents
Chair tension structure Download PDFInfo
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- JP4189455B2 JP4189455B2 JP2002024551A JP2002024551A JP4189455B2 JP 4189455 B2 JP4189455 B2 JP 4189455B2 JP 2002024551 A JP2002024551 A JP 2002024551A JP 2002024551 A JP2002024551 A JP 2002024551A JP 4189455 B2 JP4189455 B2 JP 4189455B2
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- Prior art keywords
- shell
- cushion body
- chair
- support plate
- skin material
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/02—Upholstery attaching means
- A47C31/023—Upholstery attaching means connecting upholstery to frames, e.g. by hooks, clips, snap fasteners, clamping means or the like
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- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、椅子のクッション体を支持するシェルに、クッション体を着脱可能に取り付ける椅子の張り構造に関する。
【０００２】
【従来の技術】
椅子の分別廃棄時や、補修、クリーニング時における椅子カバーの分離を容易にすることは、例えば特開２００１ー５４４３８号公報、特開２００１ー２９９４９４号公報に記載されている。
【０００３】
【発明が解決しようとする課題】
しかし、前者では、クッション材は別体のものであり、これを覆う布製の椅子カバーを取り外し可能に取り付けている。また、座部を覆う椅子カバーの三方に取付用芯材を取り付けて、これを座フレームすなわちシェルの裏面に形成した溝に押し込んで固定し、椅子カバーの残りの一方にいくつかの係止用突起を設けて、これらの係止用突起をシェルの係止孔に差し込んで固定している。このような構造では、クッション材をくるめ込む作業及び三方にわたる溝に芯材を押し込む作業に手間がかかり、面倒である。
【０００４】
また、後者では、上部に三日月形材料部分を袋状に取り付けた背凭れクッション組立体を、背凭れに着脱式に取り付けている。このような構造では、座者が背を凭せ掛けた際、クッション組立体が上方にずれる傾向があり、不具合である。殊に、このような構造を座部に適用した場合には、座者が、使用中クッション組立体に体重とともに前後動の力を加えるので、クッション組立体の固定がなされにくい。
【０００５】
本発明は、上述の問題点に鑑み、クッション材と表皮材とからなるクッション体を、椅子のシェルに着脱可能に、しかも張りを与えた状態で、簡単かつ確実に取り付けることができるようにした椅子の張り構造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）表皮材により覆われたクッション体と、該クッション体を取り付けるシェルとを備えた椅子の張り構造において、前記クッション体の一方の端部の裏面側に、内向きに開口する袋状表皮材を設けるとともに、前記袋状表皮材により覆われる部分に、内向きの係合爪を備える支持板を設け、かつ前記クッション体の他方の端部の裏面側に、有頭軸を突設した支持板を設け、前記シェルの一方の端部には、他部との間に段部を形成するようにして裏面側に張り出す張り出し部を設けるとともに、この張り出し部における前記段部より離間したシェルの一方の端部寄りの表面側の内部に、前記係合爪に係脱可能に係合する外向きの係合爪を突設し、前記シェルの他方の端部には、前記有頭軸を係脱可能に係止する係止孔を設け、前記クッション体の袋状表皮材を、前記シェルの一方の端部における張り出し部に、その段部を覆うまで被嵌させ、前記張り出し部の内部において、前記係合爪同士を互いに係合させ、他方の端部では、前記有頭軸を前記係止孔に係止させる。
【０００７】
（２）上記(１)項において、シェルの係止孔を、大径孔と、該大径孔に連続する内向きの小径孔とからなるだるま孔とする。
【０００８】
（３）上記(１)または(２)項において、シェルの中央部と、クッション体における少なくとも一方の支持板の中央部とを、平面視において着座者の荷重が掛る方向に凹入させる。
【０００９】
【発明の実施の形態】
図１〜図３は、本発明の張り構造の一実施形態を備えた椅子を示す図で、図１は、その側面図、図２は、図１の椅子の部分拡大図で、その背凭れのクッション体をシェルから離した状態で示す図、図３は、背凭れのシェルからクッション体を取り外した椅子の部分正面図である。
【００１０】
これらの図に示されるように、この椅子は、キャスター付きの脚(１)に立設された支基(２)の上に、座部(３)が取り付けられ、支基(２)の後方には、背凭れ(４)が傾動可能に支持されている。この背凭れ(４)は、シェル(５)と、これを覆うクッション体(６)とからなっている。
【００１１】
シェル(５)は、好適には合成樹脂材料の一体成型品であり、図１から明らかなように、側面視ほぼく字状をなして中位部よりやや下部が前方に突出しており、下部には弾性的な撓みを増強させる切り込み孔(７)が穿設され、上部には平面視三日月形の水平段部(８)が設けられ、その上の部分が、後方張り出し部(９)を形成している。また、シェル(５)は、平面視において中央部が後方、すなわち着座者の荷重が掛る方向に凹入する中窪み形状をしている。
【００１２】
図３及び図４に示すように、シェル(５)の前面上部両側には、上向きＬ字状の係合爪(10)が一体に形成されており、また、前面下部両側には係止孔、すなわち、図５に示すように長円形（楕円形または円形でもよい）をなす大径部と、その上部中央に連続して形成された円形の小径部とからなるだるま孔(11)が穿設されている。
だるま孔(11)の頸部(11a)、すなわち大径部と小径部との境目部分は、左右いずれの側においても僅かに内方に突出するようにされている。
【００１３】
図４、及び図６〜図８に示すように、クッション体(６)は、成型されたポリウレタン発泡体のようなクッション材(12)を、布材または合成樹脂製シート等のような表皮材(13)により被包してなるものである。
【００１４】
クッション体(６)の上部には、その上部の裏面を二重に覆うことにより、下端が開放する袋状表皮材(13a)が形成されている。袋状表皮材(13a)の下端は、前述のシェル(５)の水平段部(８)を覆う位置で終わっている。
【００１５】
クッション体(６)の裏面上部には、プラスチック成型品である左右方向に延びる支持板(14)が埋め込まれており、この支持板(14)と一体に形成した下向きＬ字状の左右１対の係合爪(15)が表皮材(13)を貫いて裏側に突出している。
係合爪(15)は、前述のシェル(５)の上向きの係合爪(10)に対応する位置に設けられている。
【００１６】
クッション体(６)の裏面下部には、プラスチック成型品である左右方向に延びる支持板(16)が埋め込まれており、この支持板(16)と一体に形成した後方を向く左右１対の有頭軸(17)が表皮材(13)を貫いて裏側に突出している。
【００１７】
有頭軸(17)は、前述のシェル(５)のだるま孔(11)に対応する位置に設けられており、その軸部は、だるま孔(11)の頸部(11a)の間隔よりも僅かに大きい径を有し、軸部が、ここを弾性的に乗り越えてだるま孔(11)の小径部に進入できるようになっている。
上下の支持板(14)(16)は、平面視において中央部が後方に凹入するように湾曲しており、これによって、クッション体(６)がシェル(５)の中窪み形状に倣うようにしている。
【００１８】
クッション体(６)をシェル(５)に取り付ける際には、図４に示すように、クッション体(６)の上部の袋状表皮材(13a)を、シェル(５)の上部に上から被せて、袋部の中に入ったシェル(５)の上向きの係合爪(10)に、支持板(14)の下向きの係合爪(15)を係合させる。
【００１９】
ついで、クッション体(６)の下部を下方に引っ張って張りを与えながら、クッション体(６)の下部における支持板(16)の有頭軸(17)の頭部を、シェル(５)の下部のだるま孔(11)の大径部に差し入れ、その後、引っ張っていた手を離すと、有頭軸(17)の軸部は、だるま孔(11)の頸部(11a)を弾性的に乗り越えてだるまの小径部内へと若干上方に戻って、ここに保持され、図８に示す取付状態となる。
【００２０】
クッション体(６)の取り外しは、上述と逆手順に行うことにより、簡単かつ迅速に行なうことができる。
なお、上述においては、本発明の張り構造を、椅子の背凭れに適用する例を示したが、座部においても同様に適用することができる。
【００２１】
【発明の効果】
請求項１記載の発明によれば、クッション体の一方の端部の袋状表皮材をシェルの一端部に被せつつ、クッション体側の係合爪をシェルの係合爪に係止させた後、クッション体の他方の端部を引張りつつ、その有頭軸をシェルの係止孔に係止させることにより、クッション体を、シェルに簡単かつ迅速に、しかもクッション体に張りを与えた状態で確実に装着することができるとともに、装着後には、袋状表皮材により、両係合爪の係合部分を含むシェルの一端部を覆うことができるので、体裁がよい。
また、有頭軸を係止孔から引き抜き、クッション体を一端側にずらせることにより、クッション体をシェルから簡単に分離することができるので、椅子の分別廃棄に寄与することができる。
さらに、張り出し部内で、シェル側の係合爪とクッション体側の係合爪とを係合させることにより、それらの係合爪がクッション体側とシェル側とのいずれかに突出するのを防止することができる。また、その張り出し部を袋状表皮材により覆うことにより、体裁をよくすることができるとともに、袋状表皮材に張りを与えることができる。
【００２２】
請求項２記載の発明によれば、係止孔への有頭軸の係脱が容易となる。
【００２３】
請求項３記載の発明によれば、着座感を向上させることができるとともに、クッション体を、シェルの中央部の凹入形状に倣わせることができる。
【図面の簡単な説明】
【図１】 本発明の一実施形態を備えた椅子の側面図である。
【図２】 同じく、背凭れのクッション体を分離した状態で示す部分拡大側面図である。
【図３】 同じく、背凭れのクッション体を取り外して示す部分正面図である。
【図４】 背凭れを分離して示す椅子の部分拡大斜視図である。
【図５】 シェルにおけるだるま孔が形成された部分の拡大正面図である。
【図６】 クッション体の上部を破断して示す部分拡大斜視図である。
【図７】 背凭れのシェルとクッション体とを分離して示す拡大縦断側面図である。
【図８】 背凭れのシェルとクッション体とを取付状態において示す拡大縦断側面図である。
【符号の説明】
(１)脚
(２)支基
(３)座部
(４)背凭れ
(５)シェル
(６)クッション体
(７)切り込み孔
(８)水平段部
(９)後方張り出し部
(10)係合爪
(11)だるま孔（係止孔）
(11a)頸部
(12)クッション材
(13)表皮材
(13a)袋状表皮材
(14)支持板
(15)係合爪
(16)支持板
(17)有頭軸[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chair tension structure in which a cushion body is detachably attached to a shell that supports the cushion body of the chair.
[0002]
[Prior art]
For example, Japanese Patent Application Laid-Open Nos. 2001-54438 and 2001-299494 describe easy chair cover separation at the time of separation and disposal of chairs, repairing, and cleaning.
[0003]
[Problems to be solved by the invention]
However, in the former, the cushion material is a separate body, and a cloth chair cover covering the cushion material is removably attached. Also, attach the mounting core to the three sides of the chair cover that covers the seat, press it into the groove formed on the back of the seat frame, ie, the shell, and fix it to the other one of the chair cover. Protrusions are provided, and these locking protrusions are inserted into the locking holes of the shell and fixed. In such a structure, the work of wrapping the cushion material and the work of pushing the core material into the groove extending in three directions are troublesome and troublesome.
[0004]
In the latter case, a backrest cushion assembly having a crescent-shaped material portion attached to the top in a bag shape is detachably attached to the backrest. In such a structure, when the seated person leans back, the cushion assembly tends to shift upward, which is a problem. In particular, when such a structure is applied to the seat portion, the occupant applies a force of moving back and forth along with the weight to the cushion assembly during use, so that the cushion assembly is hardly fixed.
[0005]
The present invention has been made in view of the above-described problems, and allows a cushion body made of a cushion material and a skin material to be easily and reliably attached to a chair shell in a detachable and tensioned state. The aim is to provide a chair tension structure.
[0006]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) In a chair tension structure including a cushion body covered with a skin material and a shell to which the cushion body is attached, a bag-like skin that opens inwardly on the back side of one end of the cushion body In addition to providing a material, a support plate provided with an inward engagement claw is provided in a portion covered with the bag-like skin material , and a headed shaft is provided on the back side of the other end of the cushion body. A support plate is provided, and at one end portion of the shell, a protruding portion is provided to protrude to the back surface side so as to form a step portion with the other portion, and the protruding portion is spaced apart from the step portion. An outward engaging claw that removably engages with the engaging claw protrudes from the surface side near one end of the shell, and the other end of the shell has the headed A locking hole for releasably locking the shaft is provided, and the cushion is The bag-like skin material of the body is fitted to the overhanging portion at one end of the shell until the stepped portion is covered, and the engaging claws are engaged with each other inside the overhanging portion, and the other At the end, the headed shaft is locked in the locking hole.
[0007]
(2) In the above item (1), the locking hole of the shell is a daruma hole composed of a large diameter hole and an inward small diameter hole continuous with the large diameter hole.
[0008]
(3) In the above item (1) or (2), the central portion of the shell and the central portion of at least one support plate in the cushion body are recessed in a direction in which a seated person's load is applied in plan view .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 are views showing a chair provided with an embodiment of the tension structure of the present invention, FIG. 1 is a side view thereof, and FIG. 2 is a partially enlarged view of the chair of FIG. FIG. 3 is a partial front view of the chair from which the cushion body is removed from the backrest shell.
[0010]
As shown in these figures, this chair has a seat (3) mounted on a support base (2) standing on a leg (1) with casters, and a rear part of the support base (2). The backrest (4) is supported in a tiltable manner. The backrest (4) includes a shell (5) and a cushion body (6) covering the shell (5).
[0011]
The shell (5) is preferably an integrally molded product of a synthetic resin material. As is apparent from FIG. 1, the shell (5) has a substantially square shape in side view, and the lower part projects forward from the middle part. Is provided with a cutout hole (7) for enhancing elastic deflection, and a crescent-shaped horizontal stepped portion (8) is provided in the upper portion, and the upper portion thereof is provided with a rear projecting portion (9). Forming. Further, the shell (5) has a hollow shape in which the central portion is recessed backward in a plan view, that is, in a direction in which a load on the seated person is applied.
[0012]
As shown in FIGS. 3 and 4, an upward L-shaped engagement claw (10) is integrally formed on both sides of the upper surface of the shell (5), and a locking hole is formed on both sides of the lower surface of the front surface. That is, as shown in FIG. 5, a daruma hole (11) comprising a large-diameter portion having an oval shape (may be elliptical or circular) and a circular small-diameter portion continuously formed at the upper center is formed. It is installed.
The neck portion (11a) of the daruma hole (11), that is, the boundary portion between the large diameter portion and the small diameter portion is projected slightly inward on either the left or right side.
[0013]
As shown in FIGS. 4 and 6 to 8, the cushion body (6) is made of a cushion material (12) such as a molded polyurethane foam, and a skin material such as a cloth material or a synthetic resin sheet. It is encapsulated by (13).
[0014]
On the upper part of the cushion body (6), a bag-like skin material (13a) whose lower end is opened by covering the back surface of the upper part twice is formed. The lower end of the bag-like skin material (13a) ends at a position covering the horizontal step portion (8) of the shell (5).
[0015]
A support plate (14) extending in the left-right direction, which is a plastic molded product, is embedded in the upper surface of the back surface of the cushion body (6), and a pair of left and right L-shaped downwards formed integrally with the support plate (14). The engaging claws (15) protrude through the skin material (13) to the back side.
The engaging claw (15) is provided at a position corresponding to the upward engaging claw (10) of the shell (5).
[0016]
A support plate (16) extending in the left-right direction, which is a plastic molded product, is embedded in the lower portion of the back surface of the cushion body (6), and a pair of left and right facing the rear formed integrally with the support plate (16). The head axis (17) penetrates the skin material (13) and protrudes to the back side.
[0017]
The headed shaft (17) is provided at a position corresponding to the aforementioned daruma hole (11) of the shell (5), and its shaft portion is larger than the distance between the neck portion (11a) of the daruma hole (11). It has a slightly larger diameter so that the shaft portion can elastically climb over this and enter the small diameter portion of the daruma hole (11).
The upper and lower support plates (14) and (16) are curved so that the central portion is recessed backward in plan view, so that the cushion body (6) follows the hollow shape of the shell (5). I have to.
[0018]
When attaching the cushion body (6) to the shell (5), as shown in FIG. 4, cover the upper surface of the shell (5) with the bag-like skin material (13a) at the top of the cushion body (6). Then, the downward engaging claws (15) of the support plate (14) are engaged with the upward engaging claws (10) of the shell (5) contained in the bag portion.
[0019]
Next, while pulling the lower part of the cushion body (6) downward to give tension, the head of the headed shaft (17) of the support plate (16) in the lower part of the cushion body (6) is moved to the lower part of the shell (5). When you put it in the large diameter part of the daruma hole (11) and then release the hand you pulled, the shaft part of the headed shaft (17) elastically climbs over the neck part (11a) of the daruma hole (11) It returns slightly upward into the small diameter portion of the daruma and is held here, resulting in the attached state shown in FIG.
[0020]
The cushion body (6) can be easily and quickly removed by performing the reverse procedure to that described above.
In the above description, the example in which the tension structure of the present invention is applied to the backrest of a chair has been shown, but the present invention can also be applied to a seat.
[0021]
【The invention's effect】
According to the invention of
Further, the cushioned body can be easily separated from the shell by pulling out the headed shaft from the locking hole and shifting the cushioned body to one end side, which can contribute to the separation and disposal of the chair.
Further, by engaging the engagement claw on the shell side and the engagement claw on the cushion body side in the overhanging portion, preventing the engagement claw from projecting to either the cushion body side or the shell side is prevented. Can do. Further, by covering the overhanging portion with the bag-shaped skin material, the appearance can be improved and the bag-shaped skin material can be stretched.
[0022]
According to the second aspect of the present invention, it is easy to engage and disengage the headed shaft from the locking hole.
[0023]
According to the third aspect of the present invention, it is possible to improve the sense of seating, the cushion body, Ru can be modeled after re-entrant shape of the central portion of the shell.
[Brief description of the drawings]
FIG. 1 is a side view of a chair provided with an embodiment of the present invention.
FIG. 2 is a partially enlarged side view showing a backrest cushion body in a separated state.
FIG. 3 is also a partial front view showing the cushion body with the backrest removed.
FIG. 4 is a partially enlarged perspective view of the chair showing the backrest separately.
FIG. 5 is an enlarged front view of a portion of a shell where a darling hole is formed.
FIG. 6 is a partially enlarged perspective view showing the upper part of the cushion body in a broken state.
FIG. 7 is an enlarged longitudinal sectional side view showing a backrest shell and a cushion body separately.
FIG. 8 is an enlarged longitudinal sectional side view showing a backrest shell and a cushion body in an attached state.
[Explanation of symbols]
(1) Leg
(2) Support base
(3) Seat
(4) Backrest
(5) Shell
(6) Cushion body
(7) Cut hole
(8) Horizontal step
(9) Back overhang
(10) Engaging claw
(11) Daruma hole (locking hole)
(11a) Neck
(12) Cushion material
(13) Skin material
(13a) Bag-shaped skin material
(14) Support plate
(15) Engaging claw
(16) Support plate
(17) Headed shaft
Claims (3)
前記クッション体の一方の端部の裏面側に、内向きに開口する袋状表皮材を設けるとともに、前記袋状表皮材により覆われる部分に、内向きの係合爪を備える支持板を設け、かつ前記クッション体の他方の端部の裏面側に、有頭軸を突設した支持板を設け、前記シェルの一方の端部には、他部との間に段部を形成するようにして裏面側に張り出す張り出し部を設けるとともに、この張り出し部における前記段部より離間したシェルの一方の端部寄りの表面側の内部に、前記係合爪に係脱可能に係合する外向きの係合爪を突設し、前記シェルの他方の端部には、前記有頭軸を係脱可能に係止する係止孔を設け、前記クッション体の袋状表皮材を、前記シェルの一方の端部における張り出し部に、その段部を覆うまで被嵌させ、前記張り出し部の内部において、前記係合爪同士を互いに係合させ、他方の端部では、前記有頭軸を前記係止孔に係止させたことを特徴とする椅子の張り構造。In the tension structure of a chair provided with a cushion body covered with a skin material and a shell to which the cushion body is attached,
On the back side of one end of the cushion body, a bag-shaped skin material that opens inward is provided, and a portion that is covered by the bag-shaped skin material is provided with a support plate that has an inward engagement claw, A support plate having a headed shaft is provided on the back side of the other end portion of the cushion body, and a step portion is formed between the other end portion and the one end portion of the shell. A projecting portion projecting on the back surface side is provided, and an outward-facing engagement with the engaging claw is detachably provided inside the surface side of the projecting portion near the one end of the shell spaced from the stepped portion . An engaging claw is protruded, and the other end portion of the shell is provided with a locking hole for releasably locking the headed shaft, and the bag-like skin material of the cushion body is attached to one of the shells. The projecting part at the end of the projecting part is fitted until the stepped part is covered, and the projecting part In part, the engagement claw each other so the mutually engaged, at the other end, tension structure of the chair, characterized in that the headed shaft was locked to the locking hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002024551A JP4189455B2 (en) | 2002-01-31 | 2002-01-31 | Chair tension structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002024551A JP4189455B2 (en) | 2002-01-31 | 2002-01-31 | Chair tension structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003225139A JP2003225139A (en) | 2003-08-12 |
| JP4189455B2 true JP4189455B2 (en) | 2008-12-03 |
Family
ID=27746966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002024551A Expired - Fee Related JP4189455B2 (en) | 2002-01-31 | 2002-01-31 | Chair tension structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4189455B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4800754B2 (en) * | 2005-11-30 | 2011-10-26 | 株式会社イトーキ | Chair |
| JP5079308B2 (en) * | 2006-11-13 | 2012-11-21 | 株式会社岡村製作所 | Cover mounting structure on backboard of chair |
| JP5285922B2 (en) * | 2008-01-31 | 2013-09-11 | タカノ株式会社 | Office chair |
| GB2459477A (en) * | 2008-04-23 | 2009-10-28 | Faversham Furniture Ltd | Arrangement for applying and maintaining the tension of a load bearing fabric on an item of furniture |
| JP5926033B2 (en) * | 2011-11-18 | 2016-05-25 | 株式会社イトーキ | Chair |
| JP5503690B2 (en) * | 2012-05-14 | 2014-05-28 | 株式会社岡村製作所 | Chair |
| KR101161288B1 (en) | 2012-05-16 | 2012-07-02 | 이웅희 | Back supporting tool for chair |
| JP2014090988A (en) * | 2012-11-06 | 2014-05-19 | Kokuyo Furniture Co Ltd | Chair |
| JP6443963B2 (en) * | 2014-07-02 | 2018-12-26 | 株式会社オカムラ | Seat member, chair |
| JP6555797B2 (en) * | 2014-10-23 | 2019-08-07 | 株式会社オカムラ | Chair load support member and chair |
| JP7208766B2 (en) * | 2018-10-09 | 2023-01-19 | 株式会社イトーキ | Chair and its manufacturing method |
-
2002
- 2002-01-31 JP JP2002024551A patent/JP4189455B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003225139A (en) | 2003-08-12 |
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