Air spring for vehicle

An air spring for a vehicle, comprising:

• a sleeve (300);
• and
• an end member to which beads (320) and (340) formed at one end of the sleeve (300) are coupled,
• wherein the end member has ring-shaped contact surfaces (110) and (742) configured to come into contact with the beads (320) and (340),
• wherein at least one protrusion (112) and at least one protrusion (744) are formed in the contact surfaces (110) and (742) to protrude toward the beads (320) and (340), respectively, and
• wherein, when the sleeve (300) is pressed against the contact surfaces (110) and (742) by a pressure of compressed air in the sleeve (300), the sleeve (300) is compressed and deformed by the at least one protrusion (112) and the at least one protrusion (744) so that the sleeve (300) and the contact surfaces (110) and (742) are prevented from rotating relative to each other.