| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology which can switch an ascending mode, a descending mode and a maintenance mode, and can save a space.SOLUTION: A vehicle height adjusting device comprises: a spring length change unit 250 which has a jack chamber 60 for accommodating oil, and adjusts a length of a spring 500 according to an oil amount in the jack chamber 60; a pump which has a cylinder 230, sucks oil accumulated in a reservoir chamber 40 into the cylinder 230 when a relative distance between a vehicle body and wheels becomes long, and discharges the oil in the cylinder 230 when the relative distance between the vehicle body and the wheels becomes short; and a flow passage changeover unit 300 which has a first communication passage for making the inside of the cylinder 230 and the reservoir chamber 40 communicate with each other, a second communication passage for making the inside of the cylinder 230 and the jack chamber 60 communicate with each other, and a third communication passage for making the jack chamber 60 and the reservoir chamber 40 communicate with each other, and switches flow passages of the oil according to a current amount to be supplied.SELECTED DRAWING: Figure 2 |
