| 摘要 |
Coupling device (1) for detachable fixing at a pipe end (2), which around its periphery has a radially projecting flange (3) against which an O-ring seal (4) bears. The coupling device (1) is characterised by a tubular inner part (5), which at a first end has a sealing surface (6), conforming to the O-ring seal (4). The inner part (5) has at least three arms (7) arranged around the periphery, which resiliently project radially out past the first end of the tubular inner part and are directed so that hooks (8), formed at their ends and directed radially inwards, can pass freely over the flange (3) and O-ring seal (4) when pushed onto the pipe end (2). A tubular outer part (9) is adapted to be passed over the inner part (5) from its second end and to press the spring arms (7) radially inwards until the hooks (8) are brought into engagement behind the radially projecting flange (3). The inner and outer parts have interacting elements (11, 12), which allow these to be fixed to one another by means of a twisting movement relative to one another. At least one window (18), through which a part of the inner part (5) is adapted to become visible when fixing has been accomplished, is incorporated into the outer part (9). |
