Daimler-benz Ag

Mercedes-benz Aktiengesellschaft

Daimler Chrysler Ag

Lothar Kassing

Karl Pfahler

Eberhard Faust

Karl-Heinz Baumann

Luigi Brambilla

Alban Bossenmaier

Lothar Groesch

Wolfram Judenhahn

Gerald Schick

Reiner Renz

Carsten Mibus

Gabriel Netzer

Markus Witzmann

A method and a system for quantitative determination of the seat climate of a seat cushion is provided. For this purpose, the seat surface is subjected, during realistic mechanical loading of the seat cushion to be tested, to a flow of moisture from a climate mat. Any moisture stagnation at the seat surface is measured. For this purpose, the seat cushion, covered with a flexible multilayer climate mat, is loaded realistically via an anthropomorphically shaped seat testing punch. The climate mat consists of the following layers: a plurality of flat moisture sensors; a trouser material layer with low moisture uptake; a distribution layer that is readily permeable to air and has a noncompressible structure; a fleece layer that can be moistened and replaced as the moisture storage medium; an electrically insulating vapor barrier; and an electrically heatable heating mat that can be set to a specific temperature.

Method and system for quantitative determination of seat climate on seat

A seat testing punch is provided with an upholstered pressure element that can be used as a suitable aid in comfort comparison testing of different test seats to be performed according to strict test criteria, with which seat testing punch various test seats can be loaded in a realistic and reproducible manner as often or for as long as desired. For this purpose, the shape of the pressure element is made to simulate the pelvis and thighs, including the hip joints, of a human skeleton, at least as regards the underside. The upholstery of the pressure element likewise simulates anthropomorphically the soft parts in the area of the buttocks in terms of local distribution of thickness and softness. In particular, the two sitting pressure points of human buttocks and their immediate environment are simulated as naturally as possible in terms of shape, position, hardness, and local hardness distribution.

Seat testing punch

A method and a device for determining the surface contour of an elastic seat cushion deformable under load are provided. Through the use of a measuring mat placed on the seat cushion, after the load is relieved, the resultant deformed state corresponding to the deformed surface of the cushion is preserved by applying a vacuum to the measuring mat. The three-dimensional surface contour of the measuring mat fixed in its deformed state is measured with a multicoordinate measuring device in known fashion. The measuring mat consists of two vacuum-tight material webs, especially plastic films, connected vacuum-tight with one another to form a pocket having a vacuum connection, with the pocket being filled with a granulate, preferably a foam granulate.

Method and device for determining the surface contour in an elastic seat

A device for actuating a safety device, in particular a roll bar in a motor vehicle. The device includes a first sensor which is actuated when a vehicle acceleration exceeding a predetermined limiting value occurs and which generates a switch signal for a release device to activate the roll bar. The device also includes second and third sensors which control switches when both at least one wheel suspension is fully extended and the vehicle is tilted about either a longitudinal or transverse axis, so as to actuate the safety device during even relatively slow overturns.

Device for controlling a roll bar serving as a safety device for the

This invention relates to an anatomical model, particularly a dummy, for simulating the effect of an accident on the human body. The model is provided with a skeleton. In the area of the thorax, the skeleton is formed by a plurality of spring rib members that simulate human ribs. Each of the spring rib members is equipped with sensor device which senses a force that affects each individual spring rib member.

Dummy for car crash testing

Growing community of inventors

Nufringen, Germany

Lothar Kassing