Chairs and seats – Bottom or back – Made of individual elongated members extending across a...
Patent
1997-05-09
1999-07-20
Brown, Peter R.
Chairs and seats
Bottom or back
Made of individual elongated members extending across a...
29744014, 29744015, 29745265, A47C 716, B60N 224
Patent
active
059247711
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a seat, and more particularly a seat which can be used as a vehicle seat in public transportation.
In designing a vehicle seat for modern rail transport systems, a structure must absorb the relatively high operational stresses which, while presenting minimum mass, provides a high degree of convenience for the passenger. At the same time, it must be capable of being manufactured economically.
Conventional vehicle seats at present are generally characterized by structure comprised of a plurality of components, e.g. an auxiliary frame for receiving components of the seat and backrest and further including armrests and headrests, and a plurality of different coverings.
One such known design discloses a seat constructed by connecting a force-absorbing tubular frame or frame portions of cast metal or of shaped sheet metal with drawn metal shells or laminated plastic components in such a way that the forces which are transmitted to the seat and backrest components via the upholstered portions are transmitted to the support feet and through these into the vehicle structure (DE OS 29 28 852, DE OS 33 28 825, DE OS 28 07 023, DE OS 32 03 670). Further auxiliary frames are conventionally used for attaching the armrests and headrests.
According to another known approach, a seat is formed in such a way that a sandwich shell on an auxiliary frame (DE OS 38 11 939) transmits the forces. Various solutions are also known for attaching the upholstery (DE OS 42 14 510).
A feature common to all these solutions is the large number of different structural members utilized. Due to the design principles normally applied, and to the manufacturing methods resulting therefrom, the members are usually produced as individual parts, i.e. they can be used only to a limited extent in making other seats with differing degrees of comfort. The alignment of individual seats next to one another in order to produce a multiple seat is only possible by means of a subframe. This subframe leads to additional manufacturing work and a limitation of the available space for the passengers' feet. The cleaning of vehicles fitted with such sub-frames is also inconvenient.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the invention to provide a seat of a commonly known design without the aforementioned disadvantages, in particular, a vehicle seat design in which constructional elements can be omitted and which can be manufactured in various dimensions and with various fittings in a universal and economical manner.
The object is achieved in accordance with the invention by a seat comprised of a seat module which is a complete constructional member including seat and backrest segments in variable width dimensions. The seat module includes two or more hollow profile parts extending in a direction parallel to a forward edge of the seat module, the seat and backrest segments each including at least one of such hollow profile parts. The hollow profile parts, which consist of a lightweight material, include webs or reinforcements, and are securably connected together. Open end faces of the hollow profile parts are closed by lateral covers mounted thereto, and the seat module is supported at one or both of the two lateral ends.
In accordance with a feature of the invention, connector members for attachment of said armrests are provided, the connector members comprising wedge-shaped segments, and the hollow profile parts defining cavities in which the wedge-shaped segments are received. The wedge-shaped segments are clamped against interior walls defining the cavities by means of a clamp screw, and the connector members are arranged parallel to the interior walls of the cavities and extend at least partially through the wedge-shaped members.
According to a further feature of the invention, connector members for attachment of headrests are provided, and which comprise a cylindrical tube into which a rectangular-section tube is inserted, the rectangular-section tube accommodating a spring steel blad
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Bauch Lutz
Marchesi Paolo
Schoenfelder Christian
Brown Peter R.
Fahrzeugsitze Bad Schandau GmbH
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