Compare with air spring in automotive suspension.
|Items||Air spring for mattress||Air spring for automotive suspension|
|Material||TPU thin film and fabric composite material||Vulcanized rubber (including cord layer)|
|Structure||Spherical cap structure without cover plate||Curved capsule structure with metal cover plate and ring band, Membrane structure with cover plate and piston.|
|Deformation||Spherical cap gradually becomes flat when compressed, the compression surface gradually increases, and the height gradually decreases.||Area of the cover was constant, height of chamber decreased, and chamber expanded outward. Height of the chamber increased with stretching and the chamber contracted inward.|
|Type of load bearing force||Only compression, no stretching, radial shear force can be ignored||Both pressure and stretching, radial shear force.|
|Vibration||Regardless of vibration||Vibration is the main working condition|
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