| 摘要 |
PROBLEM TO BE SOLVED: To provide an air spring further improved by maintaining the fitting and connection of a cylindrical film and a piston without releasing the fitting and connection and preventing the impairment of the easy assembling of a bead on the piston side and the piston even if a strong tensile force is applied in addition to a compressive force. SOLUTION: The air spring is provided with the rubber cylindrical film 3, an upper plate 1 airtightly jointed to the upper end of the cylindrical film, and the piston 2 airtightly jointed to the lower end of the cylindrical film 3, and a peripheral face 2B capable of rollingly guiding a turnover cylindrical portion 3D formed by folding back the lower end side accompanied by the elastic deformation of the cylindrical film is formed on the piston 2. The air spring is detachably provided with a press member 4B capable of pressing and sandwiching the whole portion or the approximately whole portion of the piston side bead 3C of the cylindrical film 3 in the width direction with respect to the cylindrical film expanding/contracting movement direction in cooperation with a rim 10 of the piston 2 in which the piston side bead is dropped. COPYRIGHT: (C)2009,JPO&INPIT |
