EXPANSION ANCHOR Russian patent published in 2018 - IPC F16B13/06 

FIELD: machine building.

SUBSTANCE: invention relates to an expansion anchor having a bolt. Disclosed is an expansion anchor having a bolt, which has a neck area and an expansion area adjoining the neck area, in which the bolt tapers towards the neck area, the bolt having a groove in the neck area which groove extends along the bolt, and having an expansion sleeve which at least partly surrounds the bolt and which has a web on the inner side thereof, the web engaging in the groove in the neck area, at least in some regions, and the wall thickness of the expansion sleeve being increased locally by the web. Expansion sleeve can be displaced along the bolt out of the neck area into the expansion area while radially widening the expansion sleeve. As the expansion sleeve is displaced from the neck area into the expansion area, the web reaches the expansion area, at least in some regions, and is forced radially outward by the expansion area.

EFFECT: invention is aimed at increasing reliability while simultaneously achieving favourable load parameters.

20 cl, 11 dwg