Air spring consisting of elastomeric tubular concertina shaped roll - has ends fixed to fixture, and one end clamped by tension ring, with fixture peripheral surface acting as surface for roll fold

摘要

The end (2) of the concertina shaped, elastomeric tubular roll (1) is clamped by a tension ring (4) so that the concertina wall protrudes out of the tensioning point towards the base of the fixture (3) to which the ends of the tubular roll are fixed. The concertina wall then encircles the tension ring (4), turning 180 deg. The fixture end facing the concertina has a part (5) of constricted dia. bordered by a protruding flange (7) matching the main dia. of the fixture. The constricted part contains a ridge (6) round. The tension ring ID is less than the OD of the flange. USE/ADVANTAGE - The air spring has a ridgeless concertina shaped tubular roll, reducing its unreliability as a result of it stretching when pressureless.