Anti-vandal padlock

An anti-vandal padlock comprising:

• a base having
• a mounting passage having
• an annular groove formed on an inner surface of the mounting passage;
• a buckling unit being an elongated rod and having
• a pivoting segment rotatably mounted in the base;
• a first straight segment connected to the pivoting segment and located outside the base;
• an enclosing segment connected to the first straight segment;
• and
• a second straight segment connected to the enclosing segment;
• a first anti-sawing sleeve rotatably sleeved on the first straight segment;
• a second anti-sawing sleeve rotatably and axially moveably mounted in the mounting passage;
• the second anti-sawing sleeve having
• at least one ball hole formed through a wall of the second anti-sawing sleeve;
• and
• at least one guiding wall respectively formed on a periphery of the at least one ball hole;
• at least one ball movably mounted in the second anti-sawing sleeve and being capable of respectively protruding out of the at least one ball hole;
• the at least one ball restricted by the at least one guiding wall such that the at least one ball is unmovable along an axial direction of the second anti-sawing sleeve;
• and
• a locking mechanism connected to the second anti-sawing sleeve and having
• an abutting wall;
• and
• a retreating groove;
• wherein:
• the anti-vandal padlock has a locked state and an unlocked state;
• when the anti-vandal padlock is in the locked state, the second straight segment is aligned to the mounting passage of the base, the second anti-sawing sleeve is rotatably sleeved on the second straight segment, the at least one ball hole of the second anti-sawing sleeve is aligned to the annular groove of the base, the locking mechanism abuts the at least one ball by the abutting wall and makes the at least one ball keep protruding out of the at least one ball hole and located in the annular groove, the at least one ball is capable of moving in the annular groove along with the rotation of the second anti-sawing sleeve, and the second anti-sawing sleeve is restricted by the at least one ball and the annular groove and is unmovable along the axial direction of the second anti-sawing sleeve, such that the second straight segment is undetachable from the second anti-sawing sleeve;
• and
• when the anti-vandal padlock is in the unlocked state, the retreating groove of the locking mechanism is aligned to the at least one ball, the at least one ball is located in the retreating groove and does not protrude out of the at least one ball hole, and the second anti-sawing sleeve is axially moveable and is not sleeved on the second straight segment such that the buckling unit is capable of pivoting with respect to the base.