Mercedes-Benz Aktiengesellschaft

Volker Speck

Josef Klink

Emil Dinkel

Burckhard Becker

Holger Seel

Rudolf Andres

Ernst-Reiner Frohnhaus

Eberhard Faust

Bernd Schmidt

Dietmar Zwolfer

Heinz-Jurgen Wagener

Ulrich Maier

Hans-Juergen Schlaffke

H J Schlaffke

Otto Hoelderlin

Dieter Hagedorn

A device for the stepless alteration of the seat depth of a seat cushion of a car seat, has a variable-pressure air cushion which is arranged, on the front side of the seat cushion, between a padded rest and a supporting surface. An extremely high degree of support is achieved if the air cushion is configured approximately in the form of a U and its legs, oriented in the direction of the rear edge of the seat cushion, bear on a side support which terminates towards the front side of the seat cushion and is formed by the extremely dimensionally stable supporting surface.

Seat cushion stepless alteration device

A vehicle seat has a sitting surface and a backrest which has a backrest upholstery with a forward upholstery arching arranged in the region of the lumbar vertebrae of the seat user for the purpose of relieving the user's intervertebral discs. For the physiologically most efficient back support for seat users of widely varying body height, without the need to carry out individual adaptation measures on the backrest, the upholstery arching is configured such that its contour vertex is located approximately 250 to 275 mm above the sitting surface and here is itself made so flexible that it easily matches the shape of the back of the seat user, and a relatively rigid pelvic support is formed in the upholstery arching approximately 150 to 175 mm above the sitting surface.

Vehicle seat

A motor vehicle seat with a backrest contains a spring core and has forwardly curved side parts into which inflatable air cushions are inserted for varying the contour of the backrest. The air cushions are arranged between fixed uprights and the spring core. As a result, in the event of variations in the filling pressure in the air cushions the overall shape of the spring core is varied. The horizontal contour of the backrest can thus be varied to a greater degree than previously with air cushions in the upholstery, without the surface hardness of the upholstery being adversely affected.

Motor vehicle seat

A seat unit can be screwed automatically to the body platform at four fixing points without the need to alter the seat setting during screwing and has a sufficiently rigid connection, in particular a sufficiently firm connection for seat belts which are fixed to the seat, to the body platform. The fixing regions are provided in the floor rail itself, in particular in each case at a distance from the free ends of the latter and in a profile region, extending essentially parallel to the body platform, of the floor rail. These regions are joined directly to a steep wall and, with the latter, in each case form a ramp, and are oriented such that they enclose as small an angle as possible with the floor rail, although this angle is kept sufficiently large that, in an installation setting of the seat unit, the axes of the holes extend in front of the front side of the seat and behind the rear side of the seat with a clearance of a few centimeters, which makes possible the use of a screwdriver unit.

Screw-retained motor-vehicle seat unit

Growing community of inventors

Sindelfingen, Germany

Volker Speck