| 摘要 |
The invention relates to an expansion anchor (1) with two opposing webs (5) extending in a longitudinal direction and with spreading elements (6) projecting from the webs (5) on either side in the opposing circumferential direction and having a hook shape when the expansion anchor (1) is viewed laterally. According to the invention, the webs (5) are formed with retaining surfaces (7) in the shape of a truncated cone shell, which run at an acute angle relative to a longitudinal direction of the expansion anchor from the rear to the front. The retaining surfaces (7) become longer from the rear to the front and run at a more acute angle relative to the longitudinal direction of the anchor. The retaining surfaces (7) substantially improve anchoring of the expansion anchor (1) in a soft or porous anchoring base such as porous concrete. |
