Air spring

The utility model discloses an air spring which comprises an air bag (1), the upper end of the air bag (1) is in sealed connection with a swing fixing seat (2), the lower end of the air bag (1) is in sealed connection with a lifting piston (3), the swing fixing seat (2) and the lifting piston (3) are jointly and hermetically connected with a shock absorber (4), a closed cavity is formed in the air bag (1), and an air inlet hole (32) communicated with the interior of the cavity is formed in the lifting piston (3). The outer wall of the air bag (1) is sleeved with a spiral spring (5), and the spiral spring (5) is in extrusion fit with the air bag (1) and used for peripheral side limiting and axial auxiliary supporting of the air bag (1). According to the utility model, the purposes of convenient manufacturing and assembling, production cost reduction and production efficiency improvement can be realized. 本实用新型公布一种空气弹簧，包括上端与摆动固定座（2）密封连接、下端与升降活塞（3）密封连接的气囊（1），所述摆动固定座（2）与升降活塞（3）内共同密封连接减震器（4），使气囊（1）内形成密闭腔体，在升降活塞（3）上