Padlock Having A Blocking Plate For A Spring-Biased Locking Element

A tool for a padlock having a lock body, a shackle with two shanks each have a groove for receipt of a respective part region of a locking element, a pin which can be acted on by a lock cylinder core to make a rotational movement for moving the locking elements into their locked position, the pin being biased into its locked position by a spring and having at least one engagement element configured to cooperate with at least one entrainer formation on the lock cylinder core, a blocking plate provided between the pin and the lock cylinder core fastened in the lock body and having an opening through which the entrainer formation of the lock cylinder core projects into the plane of the engagement element, with the opening being designed such that, on the one hand, a rotational movement of the lock cylinder core is possible and, on the other hand, a marginal region of the opening forms an abutment engageable with the entrainer formation for restricting rotational movement of the lock cylinder core, and the pin being arranged completely outside the plane of the blocking plate and has, at its jacket surface, an additional deeper groove in addition to two mutually oppositely disposed grooves, wherein the tool has a T shape in its front end region with the length of a transverse shank of the T shape being dimensioned such that the transverse shank is movable through the opening of the blocking plate, and wherein the dimensions of the transverse shank in the direction of the axis of rotation of the cylinder core corresponding approximately to the height of at least one of the engagement elements of the pin.