抄録
This paper deals with two dimensional base-isolating device for sick person's bed in ambulance.An automobile receives vibration in the up-and-down direction by the unevenness and hollow of the road surface.Moreover,a centrifugal force is received by running a curve at a certain speed.When receiving the force and vibration,in the state where sickness-and-wound people are sitting on the seat of the vehicle usual,they do not feel much comfortable.Furthermore the body has lain down,sickness-and-wound people gets force and vibration to the head directly.Therefore sickness-and-wound people could be worse of physical condition.So,it is necessary to isolate vibration in the up-and-down direction by the device.In order to reduce vibration of the up-and-down direction,the springs and frictions are used.This study aims at the development of isolation device of bed for ambulances to reduce displeasure by traffic vibration
