Seat for motor vehicle has additional spring support of predetermined hardness installed above lower spring support, and hardness of additional spring support is less than smallest adjustable hardness of lower spring support

摘要

The seat upholstery's spring support(3) which is adjustable in its hardness has an additional spring support(4) of predetermined hardness installed above it. The hardness of the additional spring suport is less than the smallest adjustable hardness of the lower spring support. The additional spring support may be formed by profiled wire springs and the spring support located below it may be formed by tensioned bands. The springs of the spring supports extend between a front and a rear cross member on the seat frame in its longitudinal direction.