Anchor channel and combination of anchor channel and hammerhead element

A combination of an anchor channel and a hammerhead element,

• the anchor channel comprising:
• a rail which has a cross-section having a substantially constant, C-shaped profile which extends along a longitudinal direction, the profile having an inner side and an outer side as well as an outline having an underside, having an upper side, which is located opposite the underside, and having two connecting sides which connect the upper side and the underside,
• wherein on the upper side an opening of the C-shaped profile extends in a longitudinal direction,
• wherein on the underside of the rail there are arranged especially at least two anchor bolts,
• wherein the connecting sides are formed by side walls of the rail, wherein, on the upper side, lips extend from each of the side walls as far as the opening,
• and wherein the thickness of the lip in each case widens in the direction towards the opening in such a way that the inner side and the outer side are at a setting angle with respect to one another, wherein the setting angle varies from a minimum value closer to the side wall to a maximum value closer to the opening, and the setting angle assumes the maximum value in a maximum region,
• wherein the inner side has a portion with a radius of curvature R that merges with the lip at the maximum region at a point at which the lip has a minimum thickness, and the inner side has a rounded transition from the maximum region toward a direction of maximum thickness of the lip;
• wherein a center of the maximum region is located closer to the side wall than to the opening, and
• wherein the hammerhead element is complementary to the rail and is arranged to be brought into engagement therewith in such a way that the hammerhead element in each case makes contact in the center of the maximum regions of the lips.