WO1995008284A1 - Stuhl, insbesondere bürostuhl - Google Patents
Stuhl, insbesondere bürostuhl Download PDFInfo
- Publication number
- WO1995008284A1 WO1995008284A1 PCT/EP1994/002642 EP9402642W WO9508284A1 WO 1995008284 A1 WO1995008284 A1 WO 1995008284A1 EP 9402642 W EP9402642 W EP 9402642W WO 9508284 A1 WO9508284 A1 WO 9508284A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seat
- chair
- axis
- backrest
- curved
- Prior art date
Links
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
- A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/36—Support for the head or the back
- A47C7/40—Support for the head or the back for the back
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
- A47C7/446—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with fluid springs
Definitions
- the invention relates to a chair, in particular an office chair, according to the preamble of claim 1.
- the movement sequence of the user is determined on the one hand by the shape and arrangement of the joints, which determine the direction and the angle of rotation of the movement, and on the other hand by the swivel radius, which results from the length of the limbs, which moves around a body joint become.
- Axle constructions can generally be dispensed with if you note that a swivel angle range of maximum 25 ° is sufficient for such chairs. This makes it possible to use a swivel mechanism which permits swiveling to take place about a virtual axis lying outside the chair construction. This virtual axis coincides with the relevant movement joints of the human body.
- a displacement of the swivel axis of the chair into the area of the ankle in accordance with these requirements means that the foot contact with the floor is ensured in all swivel positions and that no different additional pressure of the front edge of the seat on the lower area of the thighs during the swiveling process arises.
- the fulcrum for the structural design of the backrest is to be determined in the hip joint, taking these findings into account. Consequently, this means decoupling the movement of the seat surface and the backrest. Nevertheless, the initially independent movements are naturally related to each other, since the chair and body move synchronously. A forced control is not necessary, since the movement control of the chair takes place exclusively through body movement, specifically through the shifting of weight.
- the object of the invention is to create a chair which enables dynamic sitting while taking the relevant ergonomic aspects into account as fully as possible.
- the chair according to the invention corresponds completely, at least at least almost completely, the ergonomic necessities resulting from the above-mentioned conditions.
- the desired and ergonomically favorable movement sequences can be implemented in the constructive design of chairs with comparatively little effort.
- Figure 1 a schematic representation of the posture in two different user situations
- Figure 2 a schematic, perspective representation of a seat and backrest frame with a partially shown base frame in an embodiment without armrest
- Figure 3 an analogous to Figure 2 Representation of a
- FIG. 4 - a side view of the complete chair according to FIG. 2 in an unloaded starting position
- FIG. 5 - the chair according to FIG. 4 with the backrest pivoted backwards
- FIG. 6 - the chair according to FIG - swiveled seat
- FIG. 7 - the chair according to FIG. 4 with the seat pivoted downwards and the backrest pivoted backwards
- Figure 9 the representation of Figure 8 with the armrest pivoted upwards and backwards.
- FIG. 1 Two different user positions are symbolized in FIG.
- the user In the starting position, in which the lower legs are essentially perpendicular to the floor, the user is shown with an upright spine with a blackened overall contour.
- the solid lines of the only indicated chair with armrest correspond to this position; in a second, bent back position, only the outlines of the user are shown, while the chair contours are indicated by dashed lines.
- the decisive joint for the circular arc which is followed by the movement of the seat, is the ankle joint designated by K.
- This joint through the ankles is also the first axis of the chair.
- the knee joint is designated G when the user is in the upright position and H is designated as the hip joint in the upright position.
- the hip joint represents the second axis of the chair, about which the lower region of the backrest of the chair pivots when tilted backward.
- FIG. 2 The basic structure of a chair without an armrest can be seen from FIG.
- the perspective representation according to FIG. 2 shows the complete chair, the representation of the seat and backrest upholstery, the base with castors and the central area of the base, which continues in the stand tube 3, are missing.
- a seat support counterpart 6 is attached to the standpipe 3.
- the seat support 5 engages in the seat support counterpart 6.
- the seat support 5 is attached centrally to the seat frame la.
- the backrest frame 2a can be pivoted relative to the seat frame 1a.
- the structure of the chair according to Figure 3 is similar. However, the connection between the backrest frame 2a and the frame 1a is different. In FIG. 3, the curved regions 11a of the armrests 11 are pushed into the upwardly bent rear ends 1c of the seat frame 1a. The pivoting movement of the armrests 11 is symbolized by the double arrow 12.
- 1 denotes the entire seat, which consists of a seat frame 1 a and a seat cushion 1 b.
- the seat frame la consists of rectangular tubes, of course other materials with different cross sections are also conceivable.
- the two side, rectangular tubes of the seat frame La are bent upwards at their rear region with the radius r_.
- the radius r corresponds to the distance between the second axis H, which coincides with the hip joint and the center line 14 of the curved region 1c.
- a bent or curved area 2c of the backrest designated as a whole by 2, engages in the bent area 1c.
- the backrest 2 essentially consists of a backrest frame 2a and a backrest cushion 2b.
- the center line 14 of the curved area 1c of the seat and the curved area 2c of the backrest frame 2a coincide.
- the regions 1c and 2c curved with the same radius r are slidably connected to one another via curved bearings, for example curved longitudinal ball bearings.
- the standpipe 3 is adjustable in height in relation to the base 4 provided with castors.
- the seat support counterpart 6, into which the seat support 5 is immersed, is attached to the standpipe 3.
- Seat support 5 and seat support counterpart 6 have a coincident center line 13 which is curved with the radius r about the first axis K, which runs through the user's ankle.
- the curved seat support 5 is slidably guided in the curved seat support counterpart 6 with the aid of only schematically indicated longitudinal ball bearings. All other types of slide guides can also be used, for example plastic guides.
- a spring element 9 is arranged, which shortens under load.
- This spring element is an energy accumulator, which can be designed, for example, as a conventional gas pressure spring can.
- a corresponding spring element 10 is arranged between the backrest frame 2a and the curved area 1c of the seat frame, which element shortens when the backrest is pivoted backwards, as can be seen, for example, from a comparison of FIG. 4 with FIG. 5.
- FIGS. 8 and 9 which corresponds to the schematic representation of FIG. 3, the basic structure of the chair is the same.
- An armrest 11 is additionally provided there, which consists of a support 11b and an armrest down tube 11c.
- the armrest down tube is curved in its rear area, with the same radius as the rear curved piece 1c of the seat frame.
- FIG. 8 shows the armrest in the use situation.
- FIG. 9 shows the armrest swiveled up, in which the down tube 11c forms an extension of the contour of the backrest frame 2a.
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Hydrogenated Pyridines (AREA)
- Chairs Characterized By Structure (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE59404723T DE59404723D1 (de) | 1993-09-21 | 1994-08-10 | Stuhl, insbesondere bürostuhl |
JP7509519A JPH08503644A (ja) | 1993-09-21 | 1994-08-10 | 椅子、特に事務椅子 |
EP94925442A EP0669816B1 (de) | 1993-09-21 | 1994-08-10 | Stuhl, insbesondere bürostuhl |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4331987A DE4331987A1 (de) | 1993-09-21 | 1993-09-21 | Stuhl, insbesondere Bürostuhl |
DEP4331987.4 | 1993-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995008284A1 true WO1995008284A1 (de) | 1995-03-30 |
Family
ID=6498162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/002642 WO1995008284A1 (de) | 1993-09-21 | 1994-08-10 | Stuhl, insbesondere bürostuhl |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0669816B1 (de) |
JP (1) | JPH08503644A (de) |
AT (1) | ATE160682T1 (de) |
CA (1) | CA2149898A1 (de) |
DE (2) | DE4331987A1 (de) |
WO (1) | WO1995008284A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29600821U1 (de) * | 1996-01-18 | 1997-05-28 | Grammer Ag | Stuhl, insbesondere Bürostuhl |
DE19900454C2 (de) * | 1999-01-08 | 2001-10-25 | Andreas Struppler | Stuhl, insbesondere Bürostuhl |
CA2302063C (en) | 2000-03-23 | 2010-08-17 | Cke Technologies Inc. | Ergonomic chair |
DE10109624C1 (de) * | 2001-02-28 | 2002-09-12 | Interstuhl Bueromoebel Gmbh | Stuhl, insbesondere Bürostuhl |
DE10115501C2 (de) * | 2001-03-29 | 2003-03-27 | Struppler Associates Design Gm | Stuhl, insbesondere Bürostuhl |
DE102006023981A1 (de) | 2006-05-22 | 2007-12-06 | Wilkhahn Wilkening + Hahne Gmbh & Co. Kg | Stuhl |
DE102008011309B3 (de) * | 2008-02-27 | 2009-06-04 | Thonet Gmbh | Bürostuhl |
EP3691497B1 (de) * | 2017-10-05 | 2024-04-24 | Godrej & Boyce Mfg. Co. Ltd. | Haltungsanpassbarer arbeitsstuhl |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2448770B2 (de) * | 1974-10-12 | 1978-07-06 | Daimler-Benz Ag, 7000 Stuttgart | Schwenkbare Armstütze |
WO1981003605A1 (en) * | 1980-06-11 | 1981-12-24 | American Seating Co | Improvements in office chairs |
WO1987006810A1 (en) * | 1986-05-09 | 1987-11-19 | Jurek Buchacz | An adjustable sitting device |
EP0247328A1 (de) * | 1986-05-15 | 1987-12-02 | Kusch & Co. Sitzmöbelwerke KG | Höhenverstellbarer, mit Gasdruckfeder ausgestatteter Drehstuhl, insbesondere Bürostuhl oder -sessel |
-
1993
- 1993-09-21 DE DE4331987A patent/DE4331987A1/de not_active Withdrawn
-
1994
- 1994-08-10 EP EP94925442A patent/EP0669816B1/de not_active Expired - Lifetime
- 1994-08-10 JP JP7509519A patent/JPH08503644A/ja active Pending
- 1994-08-10 AT AT94925442T patent/ATE160682T1/de active
- 1994-08-10 DE DE59404723T patent/DE59404723D1/de not_active Expired - Fee Related
- 1994-08-10 WO PCT/EP1994/002642 patent/WO1995008284A1/de active IP Right Grant
- 1994-08-10 CA CA002149898A patent/CA2149898A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2448770B2 (de) * | 1974-10-12 | 1978-07-06 | Daimler-Benz Ag, 7000 Stuttgart | Schwenkbare Armstütze |
WO1981003605A1 (en) * | 1980-06-11 | 1981-12-24 | American Seating Co | Improvements in office chairs |
WO1987006810A1 (en) * | 1986-05-09 | 1987-11-19 | Jurek Buchacz | An adjustable sitting device |
EP0247328A1 (de) * | 1986-05-15 | 1987-12-02 | Kusch & Co. Sitzmöbelwerke KG | Höhenverstellbarer, mit Gasdruckfeder ausgestatteter Drehstuhl, insbesondere Bürostuhl oder -sessel |
Also Published As
Publication number | Publication date |
---|---|
EP0669816B1 (de) | 1997-12-03 |
DE4331987A1 (de) | 1995-03-23 |
EP0669816A1 (de) | 1995-09-06 |
JPH08503644A (ja) | 1996-04-23 |
CA2149898A1 (en) | 1995-03-30 |
DE59404723D1 (de) | 1998-01-15 |
ATE160682T1 (de) | 1997-12-15 |
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