FASTENING ELEMENT HAVING A SPRING SHANK, AND COMPOSITE STRUCTURE

摘要

A fastening element for fastening a base plate on a substructure having a web-shaped edge region includes a rotary drive and a screw spring element formed from a spring wire. A rotational axis of the rotary drive and a spring axis of the screw spring element are coaxial. The fastening element having a shank to which the screw spring element is fastened with a first end of the spring wire. The screw spring element is rotated about the spring axis via the rotary drive. The opposite free end of the screw spring element having, as a threading aid, a pitch widening which grips the web-shaped edge region of the substructure upon rotation and clamps the edge in the screw spring element upon further rotation.

主权项

1. A fastening element for fastening a base plate on a substructure having a web-shaped edge region, the fastening element comprising:
a rotary drive and a shank connected to said rotary drive, said rotary drive defining a rotational axis or the fastening element; a screw spring element mounted to said shank and having a spring axis identical to said rotational axis; said screw spring element being formed of a spring wire having a first end attached to said shank, wherein said screw spring element can be rotated about said spring axis by rotating said rotary drive; said spring wire of said screw spring element further having a free end opposite said first end formed with a pitch widening being a threading aid configured to grip the web-shaped edge region of the substructure upon being rotated and to clamp the edge within the screw spring element upon further rotation.