Self locking, snap mounted attachment device

A self locking, snap mounted attachment device including a member having a generally flat base portion;

• a rigid post having a pair of diametrically opposed arcuate end surfaces and at least one arcuate flexible finger mounted on opposite sides of said post between said arcuate end surfaces and formed integrally with said flat base portion and projecting outwardly therefrom, each of said fingers having a stem, an outwardly extending shoulder and an outer angled camming surface;
• said stems and arcuate end surfaces defining an imaginary circle generally complementary to a circular opening in a support member into which said attachment device is to be inserted for securing said member thereto.

In an improved air spring having a pair of spaced end members and a flexible sleeve having a pair of open ends sealingly connected to the end members and extending therebetween to form a fluid pressure chamber, said improvement including first and second attachment members formed integrally with the end members, each of said attachment members having a rigid member formed integrally with each of the end members and terminating in a pair of opposed curved end surfaces lying on an imaginary circle substantially equal to a circular mounting hole formed in a supporting structure in which said air spring is intended to be mounted;

• and at least a pair of flexible fingers formed integrally with each of the end members, between and on opposite sides of the rigid member, and having camming surfaces and retaining shoulders for gripping the supporting structure around the mounting holes when said fingers are inserted through said holed to mount the end members on the supporting structure.