| 摘要 |
Coupling element (1) that comprises a projection (2b) that includes a substantially truncated conical first part (3), a substantially cylindrical second part (4), both parts (3,4) being adapted to radially expand one end (20b) of a tube (20), and a substantially truncated conical negative-angle third part (5) adapted to hold the end (20b) against the projection (2b), and an assembly procedure for coupling the element (1) to a tube (20) that comprises a first stage in which the tube (20) is fixed by means of at least one gripping member, a second stage in which the end (20b) of the tube (20) radially expands when the first part (3) intersects with the interior of the end (20b), a third stage in which a substantially cylindrical surface is formed on the end (20b), and a fourth stage in which part of the end (20b) is bent towards the third part (5).
|
