To suppress an impact force which occurs a tire gets over a projection on a road surface during travel of a vehicle.SOLUTION: In a rear suspension device, a front side fluid chamber 16a in one anti-vibration bush of a pair of left and right anti-vibration bushes 21, 22 and a rear side fluid chamber 16b in the other anti-vibration bush are communicated with each other through a first pipeline 17, and a rear side fluid chamber in one anti-vibration bush and a front side fluid chamber in the other bush are communicated with each other through a second pipeline 18. This rear suspension device comprises a short-cut path 19 which can communicate the front side fluid chamber and the rear side fluid chamber, in at least one of the pair of left and right anti-vibration bushes, with a flow channel length shorter than the first pipeline and the second pipeline. In the short-cut path, a valve body 25, which is opened when a difference between an inner pressure in the front side fluid chamber and an inner pressure in the rear side fluid chamber exceeds a specified value and communicates the front side fluid chamber and the rear side fluid chamber with each other through said short-cut path, is provided.SELECTED DRAWING: Figure 1
【課題】車両の走行時に、タイヤが路面上の突起物を乗り越えたときに生ずる衝撃力を抑制する。【解決手段】左右一対の防振ブッシュ21、22のうち、一方の防振ブッシュにおける前側液室16aと、他方の防振ブッシュにおける後側液室16bと、が第1配管17を通して連通し、一方の防振ブッシュにおける後側液室と、他方の防振ブッシュにおける前側液室と、が第2配管18を通して連通し、左右一対の防振ブッシュのうちの少なくとも一方における前側液室と後側液室とを、第1配管、および第2配管より短い流路長で連通させる短絡路19を備え、短絡路には、前側液室の内圧と後側液室の内圧との差が所定値を超えたときに開き、この短絡路を通して前側液室と後側液室とを連通させる弁体25が配設されている。【選択図】図1
REAR SUSPENSION DEVICE
リアサスペンション装置
2019-08-29
Patent
Electronic Resource
Japanese