AIR SPRING WITH A GAITER VENT
An air spring for a motor vehicle comprises a first and second attachment part. An elastomeric rolling lobe is fastened in a pressure-tight manner between the two attachment parts, whereby a volume-elastic pressure chamber is delimited. The first attachment part being rotationally movably mounted via a torsion bearing ring with respect to a connector part of the motor vehicle. The torsion bearing ring for rotationally movable mounting is arranged between a bearing seat ring connected to the connector part of the motor vehicle, and the first connector part. A gaiter being is to the two connector parts to protect the rolling lobe from contamination. The gaiter delimits a varying-volume space which surrounds the rolling lobe. A ventilation path for ventilation of the gaiter leads from the surroundings of the air spring through the bearing seat ring and through the first attachment part into the space surrounded by the gaiter.
1 . An air spring for a motor vehicle comprising:
a first attachment part and a second attachment part;
an elastomeric rolling lobe fastened in a pressure-tight manner between the two attachment parts to the latter, whereby a volume-elastic pressure chamber is delimited;
a torsion bearing ring for rotationally movably mounting the first attachment part with respect to a connector part of the motor vehicle;
a bearing seat ring connected to the connector part of the motor vehicle, wherein the torsion bearing ring is arranged between the bearing seat ring and the first connector part;
a gaiter connected to the two connector parts, wherein the gaiter delimits a varying-volume space which surrounds the rolling lobe whereby the rolling lobe is protected from contamination by the gaiter; and
a ventilation path for ventilation of the gaiter leads from the surroundings of the air spring through the bearing seat ring and through the first attachment part into the space surrounded by the gaiter.
2 . The air spring as claimed in claim 1 , wherein the bearing seat ring comprises at least one channel.
3 . The air spring as claimed in claim 1 , wherein the bearing seat ring comprises a first part which bears against the connector part of the motor vehicle and a second part which bears against the torsion bearing ring.
4 . The air spring as claimed in claim 2 , wherein the at least one is made in the second part, and the first part rests in a cover-like manner on the second part.
5 . The air spring as claimed in one of claim 2 , wherein the at least one channel comprises a respective inlet orifice, which is provided on the outside on the second part, and a respective outlet orifice, which is provided on the inside on the part.
6 . The air spring as claimed in claim 5 , wherein the at least one channel comprises a respective meandering portion from the respective inlet orifice to the respective outlet orifice.
7 . The air spring as claimed in one of claim 2 , wherein the first connector part comprises a cavity into which the at least one channel of the bearing seat ring leads.
8 . The air spring as claimed in claim 1 , wherein at least one opening is made in a wall of the cavity of the first connector part, which leads into the space of the gaiter.