EP0699041B1 - Fusskreuz für einen drehbaren stuhl - Google Patents
Fusskreuz für einen drehbaren stuhl Download PDFInfo
- Publication number
- EP0699041B1 EP0699041B1 EP94915153A EP94915153A EP0699041B1 EP 0699041 B1 EP0699041 B1 EP 0699041B1 EP 94915153 A EP94915153 A EP 94915153A EP 94915153 A EP94915153 A EP 94915153A EP 0699041 B1 EP0699041 B1 EP 0699041B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- foot
- chair
- center part
- center
- trumpet
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- A47C7/002—Chair or stool bases
- A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
-
- 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
- A47C3/18—Chairs or stools with rotatable seat
-
- 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
- A47C3/18—Chairs or stools with rotatable seat
- A47C3/185—Chairs or stools with rotatable seat self-returning to the original position
Definitions
- the present invention relates to a foot for a rotatable chair incorporating a hub for the center rod of the chair seat cushion part, and particularly, a base part with an essentially trumpet-shaped contour suited for upholstering with leather or similar material.
- the invention is particularly related to a base for a TV chair or similar upholstered furniture.
- the base either has a full-metal structure, or alternatively, comprises a metal stem with a vertical hub suited to accommodate the center shaft of the chair and two square, horizontal, metal support plates which are centered at the stem and are vertically displaced from each other by a given distance, whereby the stem extends through the centerpoint of said plates.
- Between said support plates are adapted a number of circular pieces of wood so placed and shaped that they provide the peripheral contour of the trumpet-shaped base of the chair.
- Above the upper support plate is adapted a bearing piece of slightly resilient material and so contoured as to form the inner part of the trumpet-shaped base.
- This goal is achieved by a chair foot characterized in that said chair foot comprises a trumpet-shaped center part made from injection-moulded material, an outer rim part suited to accommodate the insertion of said center part in such a manner that the contours of both parts adjoin forming the entire trumpet-shaped contour of the chair foot, and further comprises a circular bottom plate to which said parts of the foot are fixed.
- the chair foot according to the invention includes a hub 1 for the center rod 2 of a rotatable chair, said chair foot having an essentially trumpet-shaped contour suited for upholstering with leather or similar upholstering material.
- the characterizing property of the chair foot according to the invention is that said chair foot comprises a trumpet-shaped center part 3 fabricated from injection-moulded material, an outer rim part 4 adapted to accommodate the insertion of said center part 3 in such a manner that the contours of both parts 3, 4 adjoin forming the entire trumpet-shaped contour of the chair foot, and further comprises a circular bottom plate 5 to which said parts 3 and 4 of the foot are fixed.
- the center part 3 By manufacturing the center part 3 from an injection-moulded material, advantageously a composite material such as a glass-fiber-reinforced thermoplastic of extremely high strength, the center part 3 can be advantageously provided with a center cavity suited act as a pivot hub 1 for the center rod 2 of the chair seat cushion part.
- Suitable thermoplastic for the center part is polypropylene, polyamide or polycarbonate.
- Sufficient stability is attained by using a number of vertical and radial stiffening ribs 6 which join the outer wall of the chair hub 1 to the inner side of the contoured envelope of the center part 3.
- the center part 3 can be alternatively made from injection-moulded aluminium or zinc.
- the rim part 4 which will not be subjected to as high mechanical stresses as the center part 3 can be advantageously injection-moulded from a less costly material such as conventional polypropylene or similar thermoplastic polymer.
- the base plate 5 can be advantageously made from plywood or similar wood material which makes it possible to fix the lower edge of the upholstering material to the underside of the base plate 5.
- the base plate 5 and the rim part 4 may be fabricated as a single piece from, e.g., wood, whereby only the contour of the center part 3 will be upholstered with leather or similar material.
- the upper part of the inner mating surface 7 may be provided with a rabbet 8 running along the entire inner rim of the rim part 4, said rabbet having a diameter compatible with the outer diameter of the center part 3 and its horizontal dimension being compatible with the height of the outer rim of the center part 3.
- the same center part 3 can be used in conjunction with rim parts 4 of different height and contour of their contour envelope (cf. Fig. 1 and Fig 4).
- the chair foot can be advantageously provided with a spacing element 15 placed in the space remaining between the stiffening ribs 6 of the center part and the base plate 5.
- a suitable method of connecting the different elements of the chair foot to each other is by means of screws, e.g., by designing each stiffening rib 6 closest to the perimeter of the center part 3 with a thicker area in which a screw hole 9 is provided.
- the rim part 4 will be fixed to the base plate 5 when the base plate 5 is fixed by screws to the center part 3.
- a suitable number of the stiffening ribs 6, and consequently, the screw holes 9 is five or six as illustrated in Fig. 3.
- the central cavity of the center part 3 is formed into a chair hub 1 suited to accommodate the conventional chair seat cushion part center rod 2, whereby the cavity has a diameter compatible with the diameter of the center rod 2.
- the center rod 2 may be of the type equipped with a return mechanism such as that illustrated in the drawing, whereby a slightly larger cylindrical cavity must be provided in the center part 3 so that an spring-loaded, axially movable sliding element 10 placed about the center rod 2 can be adapted to the interior of the chair hub 1, said sliding element 10 having at its lower end a spiral cam surface 11 adapted to cooperate with a follower roll 12 mounted on the center rod 2, thus forming a return mechanism of the type described in, e.g., the FI patent publication 83,590.
- the lower part of the chair hub 1 is provided with a bearing seat compatible with the lower end of the center rod 4, said bearing seat acting as a sliding bearing for the center rod 4, while the upper part of the chair hub 1 is provided with a ball bearing 13.
- the top of the center part 3 is provided with a collar 14 adapted about the chair hub 1, said collar having a contour which acts as a continuation of the trumpet-shaped contour of the chair base proper.
- This collar principally serves for three functions, one of which is to mask the point where the chair seat cushion part adjoins the chair base, while the collar on the other hand also facilitates an effective and simple fixing of a shape-sewn leather upholstery tensioned over the chair base. This fixing takes place by folding the upper rim of the leather upholstery over the collar 14 into a cavity formed into the collar 14, after which an annular compression spring is inserted to tension the rim of the leather upholstery against the inner wall of the collar 14.
Landscapes
- Chairs Characterized By Structure (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
Claims (9)
- Ein Fußteil für einen drehbaren Stuhl, der ein Untergestell (1) für die Stuhlmittelstange (2) und insbesondere einen Basisteil mit einer im wesentlichen trichterförmigen Kontur aufweist, die geeignet ist zum Polstern mit Leder oder einem ähnlichen Material, dadurch gekennzeichnet, daß das Fußteil einen trichterförmigen Mittelteil (3), der aus einem spritzgegossenen Material gebildet ist, einen äußeren Randteil (4) aufweist, der geeignet ist, die Einfügung des Mittelteils (3) so aufzunehmen, daß die Konturen von beiden Teilen (3, 4) aneinander angrenzen und die gesamte trichterförmige Kontur des Stuhlfußteiles bilden, und weiterhin aufweist eine kreisförmige Bodenplatte (5), auf der die Teile (3, 4) des Fußteils befestigt sind.
- Ein Fußteil für einen drehbaren Stuhl, wie in Anspruch 1 definiert, dadurch gekennzeichnet, daß die innere passende Oberfläche (7) des Randteils (4) mit einem Falz 8 versehen ist, der entlang des gesamten inneren Randes des Randteils (4) verläuft, wobei der Falz einen Durchmesser hat, der kompatibel mit dem äußeren Durchmesser des Mittelteils (3) ist, und seine horizontale Abmessung kompatibel mit der Höhe des äußeren Randes des Mittelteils (3) ist.
- Ein Fußteil für einen drehbaren Stuhl, wie in Anspruch 2 definiert, dadurch gekennzeichnet, daß die drei Hauptelemente (3, 4, 5) des Stuhlfußteils mit Hilfe von Schrauben (9) zusammengehalten werden, die die Bodenplatte (5) mit dem Mittelteil (3) verbinden.
- Ein Fußteil für einen drehbaren Stuhl, wie in Anspruch 3 definiert, dadurch gekennzeichnet, daß das Mittelteil (3) so ausgebildet ist, daß es als ein Untergestell (1) für eine herkömmliche Mittelstange (2) des Stuhlsitzkissenteils wirkt.
- Ein Fußteil für einen drehbaren Stuhl, wie in Anspruch 3 definiert, dadurch gekennzeichnet, daß das Mittelteil (3) so ausgebildet ist, daß es als Untergestell für eine rückstellfederbelastete Mittelstange (2) des Stuhlsitzkissenteils wirkt.
- Ein Fußteil für einen drehbaren Stuhl, wie in einem der vorangehenden Ansprüche definiert, dadurch gekennzeichnet, daß die Spitze des Mittelteils (3) versehen ist mit einem Bund (14), der um das Stuhluntergestell (1) angepaßt ist, wobei der Bund eine Kontur hat, die als eine Fortsetzung der trichterförmigen Kontur des Stuhlfußteils selbst wirkt.
- Ein Fußteil für einen drehbaren Stuhl, wie in einem der vorhergehenden Ansprüche definiert, dadurch gekennzeichnet, daß das Mittelteil (3) aus einem zusammengesetzten Material hergestellt ist, das ein glasfaserverstärktes Thermoplast, wie Polypropylen, Polyamid oder Polycarbonat, aufweist.
- Ein Fußteil für einen drehbaren Stuhl, wie in einem der vorhergehenden Ansprüche 1 bis 6 definiert, dadurch gekennzeichnet, daß, daß das Mittelteil (3) aus Aluminium oder Zink hergestellt ist.
- Ein Fußteil für einen drehbaren Stuhl, wie in Anspruch 6 definiert, dadurch gekennzeichnet, daß eine formgenähte Lederpolsterung, die über den Stuhlfußteil gespannt ist, an der Spitze des Stuhlfußteils mit Hilfe einer ringförmigen Druckfeder befestigt ist, die in einem Hohlraum angeordnet ist, der im Inneren des Bundes (14) angeordnet ist, um den oberen Rand der Lederpolsterung, die über den Bund (14) gefaltet ist, zusammenzupressen, und die Polsterung ist an ihrem unteren Rand durch Heften an die Unterseite der Bodenplatte (5) befestigt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI932307 | 1993-05-19 | ||
FI932307A FI92282C (sv) | 1993-05-19 | 1993-05-19 | Fot för roterbar stol |
PCT/FI1994/000177 WO1994026150A1 (en) | 1993-05-19 | 1994-05-06 | Foot for a rotatable chair |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0699041A1 EP0699041A1 (de) | 1996-03-06 |
EP0699041B1 true EP0699041B1 (de) | 1998-08-05 |
Family
ID=8537972
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94915153A Expired - Lifetime EP0699041B1 (de) | 1993-05-19 | 1994-05-06 | Fusskreuz für einen drehbaren stuhl |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0699041B1 (de) |
AT (1) | ATE169190T1 (de) |
DE (1) | DE69412256D1 (de) |
FI (1) | FI92282C (de) |
WO (1) | WO1994026150A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUD20080202A1 (it) * | 2008-09-26 | 2010-03-27 | Tonon & C Spa | Dispositivo autoallineante per un elemento di arredamento |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI83590C (sv) * | 1989-05-10 | 1991-08-12 | F Ma Mekrapid | Navkonstruktion för en roterbar stol |
-
1993
- 1993-05-19 FI FI932307A patent/FI92282C/sv not_active IP Right Cessation
-
1994
- 1994-05-06 WO PCT/FI1994/000177 patent/WO1994026150A1/en active IP Right Grant
- 1994-05-06 DE DE69412256T patent/DE69412256D1/de not_active Expired - Lifetime
- 1994-05-06 EP EP94915153A patent/EP0699041B1/de not_active Expired - Lifetime
- 1994-05-06 AT AT94915153T patent/ATE169190T1/de active
Also Published As
Publication number | Publication date |
---|---|
WO1994026150A1 (en) | 1994-11-24 |
FI92282B (sv) | 1994-07-15 |
ATE169190T1 (de) | 1998-08-15 |
FI92282C (sv) | 1994-10-25 |
FI932307A0 (fi) | 1993-05-19 |
DE69412256D1 (de) | 1998-09-10 |
EP0699041A1 (de) | 1996-03-06 |
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