EP0021191B1 - Cushion of synthetic material - Google Patents
Cushion of synthetic material Download PDFInfo
- Publication number
- EP0021191B1 EP0021191B1 EP80103158A EP80103158A EP0021191B1 EP 0021191 B1 EP0021191 B1 EP 0021191B1 EP 80103158 A EP80103158 A EP 80103158A EP 80103158 A EP80103158 A EP 80103158A EP 0021191 B1 EP0021191 B1 EP 0021191B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elevations
- cushion
- seat
- cushion pad
- height
- 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
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
- A47C7/02—Seat parts
- A47C7/18—Seat parts having foamed material included in cushioning part
Definitions
- the invention is directed to a cushion made of plastic for seating furniture and vehicle seats, the load area of which has elevations of different geometries, between which there are free spaces, the elevations forming a piece with a support plate made of the same material that is common to them.
- Upholstery cushions of this type are used primarily in the furniture sector, as they are e.g. are known from FR-A-2131448.
- Another known possibility is the working out of separate recesses, whereby a reduction in the hardness in partial areas of cushion elements has been achieved by reducing the load-bearing foam volume.
- the seat cushion of which is made of a relatively thin support plate with elastic elevations, which are optionally arranged on both sides; consists. Rubber, plastic or another elastomer is provided as the material for the seat cushion.
- the ridges have the shape of small and large mushrooms. They can be evenly or unevenly distributed.
- the mushrooms form the load-bearing, comfort-giving elements, while the support plate essentially serves only as a support for you mushrooms.
- Such a construction can only be made from non-foamed material, because when using foamed material, the relatively sensitive stems of the mushrooms would quickly tear off due to the inevitable transverse stresses.
- this seat cushion is unsuitable for automobile seats because it would give the seat a feeling of being too hard given the high dynamic loads during the journey.
- the request for protection is directed to a work chair with a seat and backrest, the seat and backrest each being formed in one piece from elastically resilient plastic foam and anatomically adapted and at least partially provided with flat knobs on their seat surface or rest surface .
- Smaller knobs, more densely than in the central area of the seat, are preferably provided in the other area of the seat, where the thighs of the seated person rest. Use of this cushion for vehicle seats is not taught in the document.
- the task is to find an upholstered cushion for seating furniture, but especially for vehicle seats, which ensures high seating comfort thanks to an optimal indentation characteristic that is tailored to the body and the stress, while the elevations of the cushion cushion can also withstand heavy transverse loads.
- the solution to the problem is that the material is foam-molded; that the support plate represents the actual cushion; that the height of the elevations is small in relation to the height of this cushion and that the distribution of the elevations of different geometries corresponds to the different loading zones of the cushion.
- elevations can be foamed at the same time as the actual cushion cushion during the molded foaming process and that, for example, elevations of a different geometry can be provided in the area of the buttocks than in the area of the less stressful thighs.
- the elevations can have a wide variety of designs, such as truncated cylinders, cones, truncated cones, pyramids, truncated pyramids, spherical caps, cuboids, prisms, ribs. Size and height are also of particular influence.
- a reaction system which, for example, forms polyurethane foam with high indentation hardness is used to produce the foam-molded cushion.
- the areas of the cushion that can be set softer are obtained by dimensioning the elevations accordingly. In this way, upholstery cushions with increasingly different hardness can be produced, in which the transition from one degree of hardness to the other can be adjusted almost continuously.
- the cushion 1 has side reinforcements 2, between which the actual seat 3 extends.
- This seat 3 is covered with three groups 4, 5, 6 of frustoconical elevations 7 of different sizes and heights.
- the geometry of these elevations 7 is matched according to the individual groups 4, 5, 6 to the stress to be recorded in each case.
- the height of the elevations 7 is small in relation to the height of the actual cushion cushion 1.
Landscapes
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
- Buffer Packaging (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Description
Die Erfindung richtet sich auf ein Polsterkissen aus Kunststoff für Sitzmöbel und Fahrzeugsitze, dessen Belastungsfläche Erhebungen unterschiedlicher Geometrie aufweist, zwischen denen Freiräume vorhanden sind, wobei die Erhebungen mit einer ihnen gemeinsamen Tragplatte aus gleichem Material ein Stück bilden.The invention is directed to a cushion made of plastic for seating furniture and vehicle seats, the load area of which has elevations of different geometries, between which there are free spaces, the elevations forming a piece with a support plate made of the same material that is common to them.
Derartige Polsterkissen dienen dem Einsatz vornehmlich im Möbelbereich, wie sie z.B. aus FR-A-2131448 bekannt sind.Upholstery cushions of this type are used primarily in the furniture sector, as they are e.g. are known from FR-A-2131448.
Zum Erzielen einer bequemen und körpergerechten Polsterqualität ist die Wahl der richtigen Eindrückhärte-Charakteristik von entscheidender Bedeutung.Choosing the right indentation hardness characteristic is of crucial importance in order to achieve a comfortable and ergonomic upholstery quality.
Man hat deshalb versucht, Blockschaumzuschnitte mit verschiedener Stauchhärte zusammenzukleben. Eine andere Lösung bestand darin, vorgefertigte Formteile einzuschäumen bzw. zu umschäumen.An attempt has therefore been made to glue block foam blanks with different compression hardness together. Another solution was to foam or foam around prefabricated molded parts.
Eine weitere bekannte Möglichkeit ist das Ausarbeiten voneinander getrennter Aussparungen, wobei durch Verminderung des tragenden Schaumstoffvolumens eine Verringerung der Härte in Teilbereichen von Polsterelementen erreicht wurde.Another known possibility is the working out of separate recesses, whereby a reduction in the hardness in partial areas of cushion elements has been achieved by reducing the load-bearing foam volume.
Aus FR-A-2 131 448 ist ein Arbeitsstuhl bekannt, dessen Sitzkissen aus einer relativ dünnen Tragplatte mit elastischen Erhebungen, die gegebenenfalls auf beiden Seiten angeordnet sind; besteht. Als Material für das Sitzkissen ist Gummi, Kunststoff oder ein anderes Elastomer vorgesehen. Die Erhebingen haben die Form kleiner und großer Pilze. Sie können gleichmäßig oder auch ungleichmäßig verteilt sein. Für den Benutzer des Sitzkissens bilden die Pilze die tragenden, Komfort spendenden Elemente, während die Tragplatte im vesentlichen nur als Träger für dir Pilze dient. Eine solche Konstruktion läßt sich nur aus ungeschäumtem Material herstellen, weil bei Verwendung von geschäumtem Material die relativ empfindlichen Stiele der Pilze durch die unvermeidlichen Querbeanspruchungen schnell abreißen würden. Insbesondere besteht durch die Pilzform der Erhebungen die Gefahr, daß Falten der Kleidungsstücke des Benutzers zwischen den Pilzköpfen eingeklemmt werden. Schießlich ist dieses Sitzkissen für Automobilsitze ungeeignet, weil es bei den starken dynamischen Beanspruchungen während der Fahrt ein zu hartes Sitzgefühl vermitteln würde.From FR-A-2 131 448 a work chair is known, the seat cushion of which is made of a relatively thin support plate with elastic elevations, which are optionally arranged on both sides; consists. Rubber, plastic or another elastomer is provided as the material for the seat cushion. The ridges have the shape of small and large mushrooms. They can be evenly or unevenly distributed. For the user of the seat cushion, the mushrooms form the load-bearing, comfort-giving elements, while the support plate essentially serves only as a support for you mushrooms. Such a construction can only be made from non-foamed material, because when using foamed material, the relatively sensitive stems of the mushrooms would quickly tear off due to the inevitable transverse stresses. In particular, due to the mushroom shape of the elevations, there is a risk that folds of the user's clothing will become trapped between the mushroom heads. Ultimately, this seat cushion is unsuitable for automobile seats because it would give the seat a feeling of being too hard given the high dynamic loads during the journey.
Weiterhin ist auch schon vorgeschlagen worden, bei Herstellung von Polsterkissen durch Formverschäumen die zu belastende Oberfläche (Sitzfläche, Lehne) mit angeformten Erhebungen unterschiedlicher Gestaltung und Größe auszustatten.Furthermore, it has also already been proposed to provide the cushioned surface (seat surface, backrest) with molded elevations of different design and size when producing upholstery cushions by molding.
Der Anmelder hat sich unter Bezugnahme auf das nicht vorveröffentlichte Dokument DE-A-2637630 freiwillig eingeschränkt und einen besonderten Patentanspruch für die Bundesrepublik Deutschland vorgelegt.The applicant has voluntarily restricted himself with reference to the unpublished document DE-A-2637630 and submitted a special patent claim for the Federal Republic of Germany.
In dem Dokument DE-A-2 837 630 ist das Schutzbegehren auf einen Arbeitsstuhl mit Sitz und Rückenlehne gerichtet, wobei Sitz und Rückenlehne jeweils einstückig aus elastisch nachgiebigem Kunstschaumstoff anatomisch angepaßt geformt und auf ihrer Sitzfläche bzw. Anlehnfläche jeweils mindestens teilweise mit flachen Noppen versehen sind. Dabei sind vorzugsweise im worderen Bereich der Sitzfläche, wo die Oberschenkel des Sitzenden aufliegen, kleinere Noppen, dichter als im mittleren Bereich der Sitzfläche, vorgesehen. Eine Anwendung dieses Polsterkissens für Fahrzeugsitze wird in dem Dokument nicht gelehrt.In document DE-A-2 837 630, the request for protection is directed to a work chair with a seat and backrest, the seat and backrest each being formed in one piece from elastically resilient plastic foam and anatomically adapted and at least partially provided with flat knobs on their seat surface or rest surface . Smaller knobs, more densely than in the central area of the seat, are preferably provided in the other area of the seat, where the thighs of the seated person rest. Use of this cushion for vehicle seats is not taught in the document.
Die Aufgabe ist darin zu sehen, ein Polsterkissen für Sitzmöbel, aber insbesondere für Fahrzeugsitze, zu finden, das hohen Sitzkomfort durch eine körpergerechte und beanspruchungsgerechte optimale Eindrückhärte-Charakteristik gewährleistet, wobei die Erhebungen des Polsterkissens auch starken Querbeanspruchungen standhalten.The task is to find an upholstered cushion for seating furniture, but especially for vehicle seats, which ensures high seating comfort thanks to an optimal indentation characteristic that is tailored to the body and the stress, while the elevations of the cushion cushion can also withstand heavy transverse loads.
Die Lösung der Aufgabe besteht darin, daß das Material formverschäumt ist ; daß die Tragplatte das eigentliche Polsterkissen darstellt ; daß die Höhe der Erhebungen im Verhältnis zur Höhe dieses Polsterkissens gering ist und daß die Verteilung der Erhebungen unterschiedlicher Geometrie den unterschiedlichen Belastungszonen des Polsterkissens entspricht.The solution to the problem is that the material is foam-molded; that the support plate represents the actual cushion; that the height of the elevations is small in relation to the height of this cushion and that the distribution of the elevations of different geometries corresponds to the different loading zones of the cushion.
Dadurch wird erreicht, daß die Erhebungen gleichzeitig mit dem eigentlichen Polsterkissen beim Formschäumvorgang angeschäumt werden können und daß beispielsweise bei Sitzflächen im Bereich des Gesäßes Erhebungen anderer Geometrie vorgesehen werden können als im Bereich der weniger belastenden Oberschenkel. Die Erhebungen können die unterschiedlichsten Gestaltungen aufweisen, wie Zylinderstümpfe, Kegel, Kegelstümpfe, Pyramiden, Pyramidenstümpfe, Kugelkalotten, Quader, Prismen, Rippen. Von besonderem Einfluß sind auch Größe und Höhe.This ensures that the elevations can be foamed at the same time as the actual cushion cushion during the molded foaming process and that, for example, elevations of a different geometry can be provided in the area of the buttocks than in the area of the less stressful thighs. The elevations can have a wide variety of designs, such as truncated cylinders, cones, truncated cones, pyramids, truncated pyramids, spherical caps, cuboids, prisms, ribs. Size and height are also of particular influence.
Zur Herstellung des formverschäumtem Polsterkissens verwendet man ein Reaktionssystem, das beispielsweise Polyurethanschaumstoff hoher Eindrückhärte bildet. Die weicher einzustellenden Bereiche des Polsterkissens erhält man durch die entsprechende Dimensionierung der Erhebungen. Es lassen sich auf diese Weise Polsterkissen mit zunehmend unterschiedlicher Härte herstellen, bei denen der Übergang von einem Härtegrad zum anderen nahezu stufenlos eingestellt werden kann.A reaction system which, for example, forms polyurethane foam with high indentation hardness is used to produce the foam-molded cushion. The areas of the cushion that can be set softer are obtained by dimensioning the elevations accordingly. In this way, upholstery cushions with increasingly different hardness can be produced, in which the transition from one degree of hardness to the other can be adjusted almost continuously.
Weitere Vorteile des erfindungsgemäßen Polsterkissens sind darin zu sehen, daß man die Erhebungen nach Anbringen des Bezuges nicht mehr sieht und daß auch im belasteten Zustand infolge der zwischen den Erhebungen vorhandenen Freiräume eine erhebliche Verbesserung des klimatischen Sitzkomforts gegeben ist.Further advantages of the upholstery cushion according to the invention can be seen in the fact that the elevations can no longer be seen after the cover has been applied and that, even in the loaded state, there is a considerable improvement in the climatic seating comfort as a result of the free spaces between the elevations.
In einer Zeichnung ist das erfindungsgemäße Polsterkissen am Beispiel eines Automobilsitzes dargestellt und nachstehend näher erläutert. Es zeigen :
- Fig. 1 das Kissen in der Draufsicht und
- Fig. 2 das Kissen im Schnitt gemäß Linie A-B in Fig.1.
- Fig. 1 the pillow in plan view and
- Fig. 2 shows the pillow in section along line AB in Fig.1.
Das Polsterkissen 1 weist Seitenverstärkungen 2 auf, zwischen denen sich die eigentliche Sitzfläche 3 erstreckt. Diese Sitzfläche 3 ist mit drei Gruppen 4, 5, 6 von zylinderstumpfartigen Erhebungen 7 unterschiedlicher Größe und Höhe bedeckt. Die Geometrie dieser Erhebungen 7 ist gemäß den einzelnen Gruppen 4, 5, 6 auf die jeweils aufzunehmende Beanspruchung abgestimmt. Die Höhe der Erhebungen 7 ist im Verhältnis zur Höhe des eigentlichen Polsterkissens 1 gering.The cushion 1 has
Claims (1)
- Cushion pad of plastics materials for seat furniture and vehicle seats, of which the stress-bearing surface has elevations (7) of differing geometry, between which free spaces are present, wherein the elevations (7) form one piece. with a common supporting slab (1) of the same material, characterised in that the material is foamed in a mould ; in that the supporting slab (1) represents the actual cushion pad ; in that the height of the elevations (7) is small in relation to the height of this cushion pad (1) and in that the distribution of the elevations (7) of differing geometry corresponds to the differing areas of stress (4, 5, 6) of the cushion pad.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19792924662 DE2924662A1 (en) | 1979-06-19 | 1979-06-19 | SHAPED FOAM UPHOLSTERY PILLOW |
| DE2924662 | 1979-06-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0021191A2 EP0021191A2 (en) | 1981-01-07 |
| EP0021191A3 EP0021191A3 (en) | 1981-02-11 |
| EP0021191B1 true EP0021191B1 (en) | 1982-04-28 |
Family
ID=6073565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP80103158A Expired EP0021191B1 (en) | 1979-06-19 | 1980-06-06 | Cushion of synthetic material |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0021191B1 (en) |
| JP (1) | JPS564570A (en) |
| AU (1) | AU532480B2 (en) |
| BR (1) | BR8003787A (en) |
| CA (1) | CA1139024A (en) |
| DE (2) | DE2924662A1 (en) |
| ES (1) | ES251483Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7059682B2 (en) | 2000-07-03 | 2006-06-13 | Herman Miller, Inc. | Seating structure having flexible seating surface |
| US8900560B2 (en) | 2006-09-29 | 2014-12-02 | Genzyme Corporation | Amide dendrimer compositions |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3784656D1 (en) * | 1986-05-26 | 1993-04-15 | Peter George Gordon Gregory | CHAIR ELEMENT. |
| EP0281694A1 (en) * | 1987-03-11 | 1988-09-14 | Magerik Ltd | A seat |
| ZA891755B (en) * | 1988-06-30 | 1989-11-29 | Johanna Groenewald Petronella | Mattress |
| CN1028150C (en) * | 1988-10-31 | 1995-04-12 | 石贵春 | Method of and apparatus for medical-therapeutic treatment of human body |
| DE4434396A1 (en) * | 1994-09-27 | 1996-03-28 | Silja Praski | Back massager and scratching device |
| DE19736839A1 (en) * | 1997-08-23 | 1999-02-25 | Volkswagen Ag | Deformation structure for occupant protection in vehicles |
| US6336681B1 (en) | 1998-05-18 | 2002-01-08 | Robert Andrew Crosbie | Chair and seat cushion therefor |
| SI1871197T1 (en) | 2005-03-30 | 2022-08-31 | Woodbridge Foam Corporation | Foam seat element, mold for the production thereof and method to manufacture the mold |
| US7934774B2 (en) | 2006-03-31 | 2011-05-03 | Lear Corporation | Vehicle seat assembly having a hardness gradient |
| US7661764B2 (en) | 2006-08-30 | 2010-02-16 | Lear Corporation | Vehicle seat assembly having a hardness gradient via “A” surface intrusions and/or protrusions |
| GB2441417A (en) * | 2006-08-30 | 2008-03-05 | Lear Corp | Vehicle seat cushion with holes to make regions of the cushion softer than others |
| JP5242088B2 (en) * | 2007-06-27 | 2013-07-24 | 株式会社イノアックコーポレーション | Automotive seat cushion |
| DE102009057072B4 (en) * | 2009-12-04 | 2016-08-11 | Grammer Aktiengesellschaft | Pad with ventilation for a vehicle seat |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB847131A (en) * | 1957-08-02 | 1960-09-07 | Hallam Sleigh & Cheston Ltd | Improvements in seats |
| DE2132741A1 (en) * | 1971-03-31 | 1973-01-11 | Emil Hoeck | SEAT CUSHION |
| JPS51150459A (en) * | 1975-06-19 | 1976-12-24 | Jiyunji Yamada | Cushion for chair |
| DE2837630C2 (en) * | 1978-08-29 | 1983-04-21 | F. Biedermann Gmbh & Co Kg, 7450 Hechingen | Work chair |
-
1979
- 1979-06-19 DE DE19792924662 patent/DE2924662A1/en not_active Withdrawn
-
1980
- 1980-06-06 DE DE8080103158T patent/DE3060337D1/en not_active Expired
- 1980-06-06 EP EP80103158A patent/EP0021191B1/en not_active Expired
- 1980-06-12 CA CA000353856A patent/CA1139024A/en not_active Expired
- 1980-06-17 JP JP8098880A patent/JPS564570A/en active Pending
- 1980-06-18 AU AU59390/80A patent/AU532480B2/en not_active Ceased
- 1980-06-18 BR BR8003787A patent/BR8003787A/en unknown
- 1980-06-18 ES ES1980251483U patent/ES251483Y/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7059682B2 (en) | 2000-07-03 | 2006-06-13 | Herman Miller, Inc. | Seating structure having flexible seating surface |
| US7794022B2 (en) | 2000-07-03 | 2010-09-14 | Herman Miller, Inc. | Body support structure having a molded elastomeric member |
| US8900560B2 (en) | 2006-09-29 | 2014-12-02 | Genzyme Corporation | Amide dendrimer compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| AU532480B2 (en) | 1983-09-29 |
| CA1139024A (en) | 1983-01-04 |
| EP0021191A3 (en) | 1981-02-11 |
| DE3060337D1 (en) | 1982-06-09 |
| JPS564570A (en) | 1981-01-17 |
| AU5939080A (en) | 1981-01-08 |
| EP0021191A2 (en) | 1981-01-07 |
| ES251483U (en) | 1980-10-01 |
| BR8003787A (en) | 1981-01-13 |
| ES251483Y (en) | 1981-03-16 |
| DE2924662A1 (en) | 1981-01-15 |
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