Guiding device for safety belt

The device has an opening by which a strap (26) slides. The device is placed between a transmitter and a bolt (34) of a safety belt. The device is formed of a stud for facilitating its insertion in a receiving unit (40). Detent balls are mounted in the stud. Effort of maintaining the balls in locking position is lower than a resulting unlocking effort exerted by a lateral traction on the strap.