| 摘要 |
The first coupling part (1) has a first engagement component (8) for insertion in the second coupling part, which has in plan view a non-rotation symmetrical shape. The second coupling part in an upper surface has an opening with a shape matching that of the first engagement component, but dimensioned to allow insertion of the first engagement component. The second coupling part has second engagement components which can engage with the first engagement component after its insertion in the second coupling part and after rotation of the first coupling part with a predetermined angle. The first coupling part has a stop component (6) for determining the insertion depth in the second coupling part. |
