Power contact subassembly with effortless coupling, power connection module integrating such a subassembly for clamping an electric cable termination

A power contact subassembly of the female type, comprising:

• a female power contact in the form of a cylindrical socket of central axis, comprising:
• a hollow tube,
• flexible contact arms, which are in the continuation of the hollow tube and angularly distributed with the formation of petals, the petals being designed to be deflected from a rest position in which a male power contact can be inserted between them, to a deflected position in which the male power contact is clamped between the petals so as to establish electrical continuity between the male and female contacts;
• a clamping collar, mounted slidingly around the socket for deflecting the arms;
• a displacement mechanism of the clamping collar for displacing the clamping collar from a first position corresponding to the deflected position of the petals to a second position corresponding to the rest position of the petals;
• the displacement mechanism being designed to transform a pivoting movement, along an axis perpendicular to the central axis of the contact, of a separate component external to the collar into a translational movement of the clamping collar;
• at least one elastic position-return means for returning the clamping collar from its second position to its first position.