Locking device with mushroom-shaped locking spigot and spigot head with an edge area gripped by the spigot head

摘要

The locking device comprises a mushroom-shaped locking spigot (2,2') and spigot head (7,7') with an enlarged diameter, and a closing part with a longitudinal hole whose width corresponds to the diameter of the spigot. The edge area is gripped by the spigot head and the spigot body has a freely rotating fixed guiding roller.