Anchor bolt for hollow wall

Abstract

Disclosed herein is an anchor bolt for a hollow wall including: a core shaft having an inner bolt insertion hole perforated therein in an axial direction; an inner bolt screw-coupled to the inner bolt insertion hole; and an expansion locking tube arranged between the core shaft and the inner bolt to surround the inner bolt. The expansion locking tube and the inner bolt are combined with the core shaft and are inserted into a through hole of the hollow wall. When the inner bolt is screw-coupled to the inner bolt insertion hole and is inserted into the core shaft, the expansion locking tube is bent to be expanded outwards in a radial direction of the core shaft so that an elastic force is applied in a resistant direction to a direction that the core shaft is outwardly separated from the through hole.

Dependencies are inferred from the claim text.