| 摘要 |
<p>An air spring has a piston (1) and an end member (2) spaced apart by, and sealingly connected to a respective end (4,5) of, a flexible resilient element (3) to form a fluid chamber (6) therebetween. The piston (1) has an upper part (7) and a lower part (8) each having mutually opposed joint surfaces which are joined together to form a joint (11) for securing the upper part (7) of the piston (1) to the lower part (8) of the piston (1). The lower part (8) is formed in one piece and comprises a bottom portion (27), a continuous circumferential neck portion (25), which defines at least a part of an internal cavity (28), and a shoulder portion (26) being wider than the neck portion (25).</p> |
