Tow bar for motor vehicles

摘要

A locking arrangement (17), which secures a holder (11) about the insertion end (15) of a coupling arm (12), includes three locking balls (21) circumferentially spaced around the insertion end. Two of the balls are located at one longitudinal half of the insertion end and apply stresses to the clamping surface (71) of the insertion end in a direction transverse to the longitudinal direction.