WO2010050175A1 - Fauteuil - Google Patents

Fauteuil Download PDF

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Publication number
WO2010050175A1
WO2010050175A1 PCT/JP2009/005643 JP2009005643W WO2010050175A1 WO 2010050175 A1 WO2010050175 A1 WO 2010050175A1 JP 2009005643 W JP2009005643 W JP 2009005643W WO 2010050175 A1 WO2010050175 A1 WO 2010050175A1
Authority
WO
WIPO (PCT)
Prior art keywords
seat
backrest
frame
chair
armrest
Prior art date
Application number
PCT/JP2009/005643
Other languages
English (en)
Japanese (ja)
Inventor
五十嵐僚
中山健
Original Assignee
株式会社岡村製作所
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from JP2008277534A external-priority patent/JP5512953B2/ja
Priority claimed from JP2008277533A external-priority patent/JP5512952B2/ja
Application filed by 株式会社岡村製作所 filed Critical 株式会社岡村製作所
Publication of WO2010050175A1 publication Critical patent/WO2010050175A1/fr

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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
    • A47C1/03255—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
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03283—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with fluid springs

Definitions

  • the present invention relates to a chair in which a seat is provided on a lower structural body of a chair so as to be rotatable between a standby position tilted rearward and a use position that is substantially horizontal.
  • the present invention relates to a chair in which lower end portions of a backrest are attached to both side portions on the rear side of a seat so as to be able to rotate in the front-rear direction above the seat.
  • Patent Documents 1 and 2 there are chairs described in Patent Documents 1 and 2, for example. Further, as described in Patent Document 3, for example, side pieces on both sides of the lower part of the backrest that is plate-shaped are rotated in the front-rear direction on the support part for the backrest that stands up from both side surfaces of the rear part of the seat. There is a movable chair.
  • JP 7-124200 A Japanese Patent Laid-Open No. 10-295731 JP-A-48-63856
  • the chair described in the above-mentioned patent document 1 Since the armrest is horizontally fixed to the upper surface of the leg of the chair, the chair described in the above-mentioned patent document 1 is seated with a hand on the front end of the armrest when the seated person sits on the seat. be able to. However, since the armrest approaches the seat when the seat is tilted upward, if you try to sit down with your hand on the armrest in this state, the arm must be bent into an unnatural shape, Convenience is bad.
  • the rear end of the armrest is attached to the backrest, so if you try to sit down with your hand on the front end of the armrest on a seat that is tilted rearward upward, the load This may cause the seat to rotate downward before it is seated.
  • the backrest is tilted back and forth, the armrest also tilts and the distance from the upper surface of the seat changes, so the elbow cannot be placed on the armrest in a comfortable posture.
  • the support portions for the backrest that are located on both sides of the seat and the both sides of the backrest that are the attachment portions to the support portions are formed in a thin plate shape. Therefore, it is not possible to attach an armrest or a large backrest with a large vertical dimension that can hang the entire back to the support part for the backrest of such a seat in terms of strength. Have difficulty.
  • the backrest is made of a plate, even if a cushion material is provided on the front, when the seated person leans on the backrest, the backrest should follow the shape of the back and rearwardly. It cannot be bridged sufficiently and a comfortable sitting comfort cannot be obtained.
  • the present invention has been made in view of the above problems, and even when the seat or the backrest is inclined, the relative position between the armrest and the seat does not change, and when the user sits on the front end of the armrest with his hand.
  • An object of the present invention is to provide an easy-to-use chair in which the seat does not rotate downward.
  • the present invention increases the strength of the armrest by forming the armrest integrally with the seat, and the lower portion of the backrest is stably rotated above the rear side portions of the seat on this armrest.
  • the seat is attached to the lower structure of the chair so that the seat can be rotated between a standby position inclined backward and upward and a use position that is substantially horizontal, and the seat is biased toward the standby position.
  • armrests are provided on both sides of the seat, and when the seat is in the standby position, the front end of the armrest is forward of a vertical line passing through the center of the seat mounting shaft with respect to the lower structure.
  • the armrest is provided integrally with the seat, even if the seat rotates between the standby position and the use position, the relative position of the armrest with respect to the seat does not change. Therefore, the elbow can be placed on the armrest in a natural state from the standby position to the use position, and the usability of the chair is improved.
  • the front end of the armrest is positioned in front of the vertical line passing through the center of the seat mounting shaft with respect to the lower structure. When seated, there is no possibility that the seat will rotate downward due to the load, and the seat can be seated with peace of mind.
  • the front lower part of the seat is attached to the lower structure, and the armrests are provided so as to stand up from the rear side parts of the seat and face the front.
  • the front end of the armrest can be easily positioned forward and rearward from the vertical line passing through the center of the seat mounting axis simply by rotating the seat to the standby position and the use position. Can do.
  • An armrest composed of a backrest pivoting portion facing upward and an armrest extending forward from the upper end of the backrest pivoting portion is integrally cast on both rear side portions of the seat, A forward-facing piece provided at both lower portions of the backrest is attached to the outer surface of the backrest pivot so that the backrest can be rotated in the front-rear direction by a shaft extending in the left-right direction.
  • the armrest is integrally connected to the seat, the strength of the armrest is increased.
  • the lower part of the backrest is attached to the pivoting support part facing upward by the front side piece connected to it, even if the backrest has a large vertical dimension, it is stable above the rear side parts of the seat. Can be rotated.
  • the inner surface of the forward-facing side piece does not come into extensive contact with the outer surface of the load-supporting pivot part, so that a sliding noise is generated when the backrest is rotated, The possibility that scratches are formed on the surface facing the forward side piece is reduced.
  • the backrest is connected to the upper and lower ends of a pair of left and right side frames extending in the vertical direction by an upper frame and a lower frame extending in the horizontal direction.
  • the front side is formed in a structure including a back frame having a substantially rectangular frame shape, and forward side pieces are integrally connected to lower portions on both sides of the both side frames.
  • the front side piece is integrally connected to the side frame of the back frame having a rectangular frame shape, so the strength of the front side piece is high, and the lower part of the backrest is It can be stably attached to the backrest pivot.
  • the back frame is stretched by showing a bag-shaped upholstery material having an open lower end.
  • an extension frame facing upward is connected to the upper ends of the left and right side frames of the back frame, and the upper ends of both extension frames are connected by a top frame extending in the left-right direction.
  • the headrest frame is connected to the upper end of the back frame. Further, the headrest frame and the back frame are stretched by covering them with a bag-like tension material.
  • the headrest is formed by the tension member placed on the headrest frame, and the tension material in this portion is bent backward, so that the back of the seated person can be comfortably supported.
  • the elbow from the standby position to the use position, the elbow can be hung on the armrest in a natural state, and the usability of the chair is improved.
  • the seat when the user sits on the front end of the armrest at the standby position, there is no possibility that the seat will rotate downward due to the load, and the user can sit with peace of mind.
  • the backrest has a large vertical dimension, it can be stably rotated above the rear side portions of the seat.
  • FIG. 2 is a side view of the chair shown in FIG. 1 when the seat is in a use position where the seat is substantially horizontal. It is a side view when the backrest of the chair shown in FIG. 1 is tilted backward. It is the perspective view which looked at the back frame and the upholstery material covered on this from diagonally backward.
  • FIG. 1 to 3 show an embodiment of the chair of the present invention.
  • This chair includes a lower structure 4 in which a pedestal 2 is erected at the center of a base 1 of a disk, and a support base 3 is attached to the upper end of the pedestal 2.
  • the height of the pedestal 2 can be adjusted by gas sobring (not shown).
  • the support base 3 has a shape that expands in a substantially triangular shape from the upper end of the pedestal 2 toward the front in a plan view and a side view.
  • a front lower portion of the seat 5 is supported at the front end portion of the support base 3 via a base shaft 6 (an attachment shaft of the seat 5 with respect to the lower structure 4) extending in the left-right direction.
  • a base shaft 6 an attachment shaft of the seat 5 with respect to the lower structure 4
  • the stand-by position tilted rearward and upward and the use position tilted slightly rearward and downward can be rotated around the base shaft 6.
  • each armrest 7 stands from both sides of the rear portion of the seat 5.
  • the rear portion of each armrest 7 includes a backrest pivot support portion 7a having a semicircular arc-shaped or fan-shaped curved surface 8 in a side view protruding rearward around a support shaft 11 of a backrest 9 described later, and the backrest.
  • It consists of an upward arc-shaped elbow rest 7b that extends forward from the upper part of the pivot 7a, and the overall shape forms a substantially forward-facing triangle in a side view that converges toward the front and upper side.
  • the dimensions of the elbow rest 7b in the front-rear direction are set so that the front end thereof is positioned forward of the vertical line V passing through the center of the base shaft 6 that is the mounting shaft of the seat 5 in the standby position shown in FIG.
  • the front end portion of the elbow rest 7b is set behind the vertical line V, that is, slightly behind the base shaft 6. Has been.
  • the front end portion of the forward side piece 10 extending forward from the lower portions on both sides of the backrest 9 is supported on the outer surface of the backrest pivot support portion 7a of the left and right armrests 7 and 7 slightly forward. It is supported via a shaft 11.
  • the backrest 9 can rotate with respect to the seat 5 and the armrest 7 around the support shaft 11 between the standing position shown in FIG. 2 and the rearward tilt position shown in FIG.
  • the mounting surface of the forward side piece 10 is the outermost surface of the backrest pivot part 7a so that the inner surface of the forward side piece 10 does not come into wide contact with the outer side surface of the backrest pivot part 7a. It bulges outward to be located.
  • a portion of the lower portion of the backrest 9 facing the back surface of the backrest pivot portion 7a is formed as an arcuate concave curved surface 12 having a shape substantially corresponding to the curved surface 8 of the rear surface of the backrest pivot portion 7a.
  • the backrest 9 can be rotated about the support shaft 11 with the surfaces close to each other.
  • a gas spring or a compression spring that urges the backrest 9 in the standing direction is provided.
  • One urging means 13 is provided.
  • second urging means 14 that can assist the seated person to stand by urging the seat 5 toward the standby position.
  • the second urging means 14 is connected to, for example, a rubber torsion unit 15 whose axis extends in the left-right direction, and is directed to the rear side, which is urged counterclockwise in a side view in FIG.
  • the lower end is supported by the first link 16 and a shaft extending in the left-right direction at the tip of the first link 16, and the upper end extends in the left-right direction on the lower surface of the intermediate portion in the front-rear direction of the seat 5.
  • It consists of a second link 17 that is supported via a shaft and faces obliquely rearward and upward.
  • the armrest 7 is formed integrally with the seat 5, even if the seat 5 rotates between the standby position and the use position or the backrest 9 is inclined, the relative position of the armrest 7 with respect to the seat 5 remains unchanged. It does not change. Therefore, the elbow can be hung on the armrest 7 in a natural state from the standby position to the use position, and the usability of the chair is improved.
  • the front end portion of the armrest 7b in the armrest 7 is positioned in front of the vertical line V passing through the center of the base shaft 6 to which the seat 5 is attached.
  • the seat 5 is not likely to rotate downward due to the load, and can be seated with peace of mind.
  • the front end portion of the forward side piece 10 extending forward from the lower portions on both sides of the backrest 9 is attached to the backrest pivot support portion 7a standing from the rear side portions of the seat 5 via the support shaft 11, and the backrest is mounted.
  • the opposing surfaces of the pivot portion 7a and the lower portion of the backrest 9 are an arc-shaped or fan-shaped curved surface 8 and an arc-shaped concave curved surface 12 with the support shaft 11 as the center. 7 can be largely tilted backward without interfering with 7.
  • the backrest 9 since the lower part of the backrest 9 is firmly supported by the backrest pivot support portion 7a of the armrest 7 that is integrated with the seat 5, even if the backrest 9 has a large vertical dimension, it can be rotated stably and smoothly. Can be supported.
  • the backrest 9 connects the upper ends of a pair of left and right side frames 18, 18 that extend in the vertical direction by an upper frame 19 that extends in the left-right direction.
  • the lower ends are connected by a lower frame 20 extending in the left-right direction, and the intermediate portions in the left-right direction of the upper frame 19 and the lower frame 20 are further extended in the vertical direction located behind the both side frames 18, 18.
  • a back frame 22, which is formed by connecting with a frame 21, has a vertically rectangular frame shape.
  • the back frame 22 is integrally formed of a synthetic resin material having moderate elasticity. It is preferable to add reinforcing fibers such as glass fibers and carbon fibers to the synthetic resin material.
  • the lower portions of the side frames 18 and 18 and the lower portion of the intermediate frame 21 have an arcuate curved shape in which the center of curvature is located forward in a side view, and the upper frame 19 and the lower frame 20 are in a plan view.
  • the intermediate portion is in a curved shape located behind the both side portions.
  • the curvature centers of the curved shapes of the lower portions of the side frames 18 and 18 and the lower portion of the intermediate frame 21 coincide with the support shaft 11 of the backrest 9.
  • the intermediate frame 21 is more easily elastically deformed than other parts by forming it thinner than other frame components in the back frame 22. Therefore, the intermediate frame 21 can be elastically deformed rearward when a load is applied to the front portion of the upholstery material 26 described later.
  • the rearward displacement amount of the intermediate frame 21 with respect to the both side frames 18, 18 is set so as to increase as it goes downward.
  • the left and right forward side pieces 10 described above are formed integrally with the lower portions of the side frames 18 and 18.
  • Extending frames 23 and 23 are provided at the upper ends of the side frames 18 and 18 so as to face upward and bend so that the intermediate portion is positioned forward of the upper and lower portions in a side view.
  • a headrest frame 25 formed by connecting the upper ends of both extension frames 23 and 23 with a top frame 24 extending in the left-right direction is integrally provided on the upper end of the back frame 22.
  • the back frame 22 and the headrest frame 25 are stretched by covering the frame with a stretchable bag-like tension member 26 having an opening at the lower end and lower portions on both sides. Has been.
  • the upholstery material 26 includes a headrest cover portion 27 that covers the headrest frame 25 and a backrest cover portion 28 that covers the back frame 22, and the fabrics are different from each other. Further, the fabric of the front surface portion 27a and the rear surface portion 27b in the headrest cover portion 27 and the fabric of the front surface portion 28a and the rear surface portion 28b in the backrest cover portion 28 are also made different from each other.
  • the fabrics of the headrest cover portion 27 and the backrest cover portion 28 are both mesh materials, but the fabric of at least the front surface portion 27a of the headrest cover portion 27 is more stretchable than the fabric of at least the front surface portion 28a of the backrest cover portion 28. It is made of a rich mesh material.
  • the fabric of at least the front surface portion 27a of the headrest covering portion 27 is a rough and low density mesh material
  • the fabric of at least the front surface portion 28a of the backrest covering portion 28 is a fine mesh material with a high density.
  • the mesh material has a weaving date or stitch direction extending in the left-right direction at the front surface portion 27a of the headrest cover portion 27 and the front surface portion 28a of the backrest cover portion 28, and the rear surface portion 27b and the backrest cover portion 28 of the headrest cover portion 27.
  • the rear surface portion 28b extends in the vertical direction. That is, these mesh materials expand and contract in the horizontal direction at the front surface portions 27a and 28a, and expand and contract in the vertical direction at the rear surface portions 27b and 28b.
  • the front surface portion 28a of the back cover portion 28 is a fine mesh mesh material having a fine mesh and having a soft surface with low translucency or low transparency.
  • the rear surface portion 28b of the cover portion 28 is a mesh material having a low density and a coarse mesh, and is made of a mesh material having high translucency or high transparency.
  • As the fabric of the front surface portion 28a it is preferable to use a molding fiber in which short fibers are sandwiched between a plurality of elastic yarns.
  • front portion 27a and the rear surface portion 27b in the headrest cover portion 27, and the front portion 28a and the rear surface portion 28b in the backrest cover portion 28 are not only made of materials but also different in color, thereby improving the design. is there.
  • the upholstery material 26 is formed not only by covering the back frame 22 and the like formed in a bag shape, but also by the front portions 27a, 28a and the rear surface portions 27b, 28b of the upholstery material 26 separated from each other in the front and back directions.
  • the headrest frame 25 and the back frame 22 may be sandwiched from the front and back, and the peripheral portions of the front surface portions 27a and 28a and the rear surface portions 27b and 28b may be bound to each other, resulting in a bag shape.
  • the lower end portion of the upholstery material 26 projects the left and right forward side pieces 10 and 10 forward from the lower openings on both sides, and the lower end portions of the front surface portion 28a and the rear surface portion 28b are connected to each other in the back frame 22. Below the lower frame 20, they are attached to the lower end of the lower frame 20 by being connected to each other by hooking fasteners, hooks, fasteners and other connecting means (all not shown).
  • the headrest cover portion 27 in the headrest frame 25 and the upholstery material 26 may be omitted.
  • the intermediate portions of the upper frame 19 and the lower frame 20 are connected to each other by an intermediate frame 21 extending in the vertical direction located behind the both side frames 18, 18.
  • An intermediate portion of the rear surface portion 26 b of the upholstery material 26 is bulged rearward by the frame 21. Therefore, when the seated person falls on the backrest 9, the front surface portion 28a of the upholstery material 26 does not come into contact with the rear surface portion 28b, and the resistance force of the upholstery material 26 does not fluctuate extremely during the process.
  • the rear surface portion 28b also expands, and the extended amount of the rear surface portion 28b increases the amount of recess in the rear of the front surface portion 28a. A feeling of sitting can be obtained.
  • the intermediate frame 21 is spaced farther rearward than the both side frames 18 and 18. Can do. Therefore, the above effect can be further enhanced, the thickness of the backrest 9 in the front-rear direction can be increased, and the backrest 9 can be given a high-class feeling.
  • a headrest having a characteristic shape can be easily formed integrally with the back frame 22 by the headrest frame 25 and the headrest cover portion 27 of the bag-like upholstery material 26 shown in the headrest frame 25.
  • the upholstery material 26 has the fabrics of the front surface portions 27a and 28a and the rear surface portions 27b and 28b different from each other as described above. Therefore, even when they are formed of a mesh material, the occurrence of moire patterns is prevented. sell.
  • the upholstery material 26 can exhibit an appropriate amount of bending, and the surface of the upholstery material 26 can have flexibility. Moreover, sufficient air permeability and elasticity can be imparted to the upholstery material 26 without reducing its translucency or transparency.
  • the initial tension of the tension member 26 in the lower part of the backrest 9 can be made larger than the initial tension of the tensioner 26 in the upper part of the backrest 9.
  • the upholstery material 26 on the backrest 9 on which the upper part of the back hits has a weak tension and is deeply recessed backward.
  • the upholstery material 26 under the backrest 9 where the lower back part and the temporary part hit from the lower part of the back has a strong tension and strongly supports the body. As a result, a comfortable seating feeling can be given to the seated person.
  • the amount of the rearward displacement of the intermediate frame 21 with respect to the side frames 18 and 18 is partially different in the vertical direction, so that the material and shape of the bag-like upholstery material 26 are partially changed in the vertical direction.
  • the tension of the upholstery material 26 when it is attached to the back frame 22 can be partially varied in the vertical direction without changing the position. Therefore, the tension of the tension member 26 in the portion is increased or decreased by increasing or decreasing the amount of displacement of the desired height portion of the backrest as desired. be able to.
  • the present invention is not limited to the above embodiment.
  • the armrest 7 is integrally connected to both rear side portions of the seat 5, but a separate armrest may be attached to the seat 5 by an appropriate fixing means.
  • the attachment position can also be, for example, the middle of the seat 5 in the front-rear direction.
  • the seat 5 is applied to a chair that rotates from a rearward-facing standby position to a use position that is substantially horizontal has been described.
  • the present invention can also be applied to a chair fixed to the chair.
  • the elbow can be hung on the armrest in a natural state from the standby position to the use position, and the usability of the chair is improved.
  • the user sits on the front end of the armrest at the standby position, there is no possibility that the seat will rotate downward due to the load, and the seat can be seated safely.
  • the backrest has a large vertical dimension, it can be stably rotated above the rear side portions of the seat.

Abstract

L’invention concerne un fauteuil (1) comprenant un siège (5) qui est monté à une structure inférieure (4) du fauteuil de sorte à pouvoir être pivoté en une position d’attente dans laquelle le siège (5) est incliné vers l’arrière et vers le haut et une position d’utilisation dans laquelle le siège (5) est maintenu sensiblement horizontalement. La présente invention est munie d’un moyen de pression pour forcer le siège vers la position d’attente. Des accoudoirs (7) sont fournis des deux côtés du siège de sorte que, lorsque le siège est en position d’attente, les extrémités avant des accoudoirs sont situées en avant d’une ligne verticale (V) passant par le centre d’un arbre de montage (arbre de base (6)) pour monter le siège sur la structure inférieure. Les positions relatives du siège et des accoudoirs ne changent pas même si le siège et le dossier sont inclinés, et le siège ne pivote pas vers l’arrière lorsqu’un utilisateur s’assied sur le fauteuil en tenant les extrémités avant des accoudoirs avec ses mains. Par conséquent, le fauteuil est d’utilisation pratique.
PCT/JP2009/005643 2008-10-29 2009-10-26 Fauteuil WO2010050175A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2008277534A JP5512953B2 (ja) 2008-10-29 2008-10-29 椅子
JP2008-277533 2008-10-29
JP2008277533A JP5512952B2 (ja) 2008-10-29 2008-10-29 椅子
JP2008-277534 2008-10-29

Publications (1)

Publication Number Publication Date
WO2010050175A1 true WO2010050175A1 (fr) 2010-05-06

Family

ID=42128545

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/005643 WO2010050175A1 (fr) 2008-10-29 2009-10-26 Fauteuil

Country Status (1)

Country Link
WO (1) WO2010050175A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150164225A1 (en) * 2012-03-08 2015-06-18 Walter Knoll Ag & Co. Kg Functional Chair

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07124200A (ja) * 1993-11-05 1995-05-16 Tenpaku Sangyo Kk 着座および起立補助装置付椅子
JP2002142895A (ja) * 2000-11-10 2002-05-21 France Bed Co Ltd 椅 子
JP2006101929A (ja) * 2004-09-30 2006-04-20 Kokuyo Co Ltd 事務椅子用肘掛け
JP2008532625A (ja) * 2005-03-08 2008-08-21 スチールケース デベロップメント コーポレイション 形状変化する背中支持フレームを有する腰掛

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07124200A (ja) * 1993-11-05 1995-05-16 Tenpaku Sangyo Kk 着座および起立補助装置付椅子
JP2002142895A (ja) * 2000-11-10 2002-05-21 France Bed Co Ltd 椅 子
JP2006101929A (ja) * 2004-09-30 2006-04-20 Kokuyo Co Ltd 事務椅子用肘掛け
JP2008532625A (ja) * 2005-03-08 2008-08-21 スチールケース デベロップメント コーポレイション 形状変化する背中支持フレームを有する腰掛

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150164225A1 (en) * 2012-03-08 2015-06-18 Walter Knoll Ag & Co. Kg Functional Chair
US9833074B2 (en) * 2012-03-08 2017-12-05 Walter Knoll Ag & Co. Kg Functional chair

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