| 摘要 |
An air spring includes: an upper surface plate; a lower surface plate opposing the upper surface plate; an elastic film airtightly coupling a peripheral portion of the upper surface plate and a peripheral portion of the lower surface plate to each other to form an air chamber inside the air spring; the air chamber connected to the lower surface plate; and an exhaust passage forming body at which an exhaust passage is formed. The exhaust passage includes an exhaust passage inlet and an exhaust passage outlet. The exhaust passage inlet is open to an outside of the air chamber when a clearance between the upper surface plate and the lower surface plate in an upward/downward direction falls within a predetermined allowable range and is open to an inside of the air chamber when the clearance exceeds an upper limit of the predetermined allowable range. |
