EXPANDING ANCHOR

The invention relates to an expansion anchor (1) for anchoring in a fixed foundation made of concrete. According to the invention, the expansion anchor (1) comprises an expansion sleeve (14) with a slit, said expansion sleeve having, in the front section (15), a partial expansion (19) in the slit (18) and, at the same height, a recess (23) in an expansion section (20). The expansion of the expansion section (20) of the expansion sleeve (14) in the fixed foundation is improved by means of the local expansion (19) and the recess (23). 本发明涉及一种用于锚定在由混凝土构成的固定地基中的膨胀锚栓（1）。膨胀锚栓（1）包括开有狭缝的膨胀套筒（14），该膨胀套筒在前面的区段（15）中具有在狭缝（18）内的局部的扩展部（19），并且在相同的高度上具有在膨胀部段（20）内的凹口（23）。通过局部的扩展部（19）和凹口（23），改善了膨胀套筒（14）的膨胀部段（20）在固定地基中的膨胀。