Door locking device, has roller mounted around horizontal axis for making cylindrical shape block to contact with ground at two non confounded contact surfaces, and unit mounted to roller around axis with respect to soleplate

摘要

The device has a unit mounted to a roller around a horizontal axis (7) with respect to a soleplate (1), such that surfaces of a cylindrical shaped block (6) are parallel to the axis. The distance between the axis and a point of the block is greater than the distance separating the axis and the ground. A roller is mounted around the axis for making the block to contact with the ground at two non confounded contact surfaces.