Patent ID: 7921682

Claim:
A padlock, comprising: a lock body, said lock body comprising an accommodation chamber, a lock chamber, a first shackle hole and a second shackle hole arranged in parallel at two opposite lateral sides relative to said accommodation chamber and said lock chamber, two sliding grooves respectively transversely extended between two opposite lateral sides of said lock chamber and said first shackle hole and said second shackle hole, a plurality of first mounting holes respectively disposed in said lock chamber, and a plurality of second mounting holes; two actuation members mounted in said lock chamber of said lock body, two latches respectively mounted in said sliding grooves and movable by said actuation members in and out of said first shackle hole and said second shackle hole; a lock cylinder affixed to said first mounting holes of said lock body, said lock cylinder comprising a core rotatable by a predetermined key to drive said actuation members in moving said latches; an alarm control device accommodated in said accommodation chamber of said lock body, said alarm control device comprising a housing having a battery chamber that accommodates a set of battery cells, and an alarm circuit board mounted inside said housing, said alarm circuit board comprising a buzzer to output an audio alarm signal; a U-shaped lock shackle, said U-shaped lock shackle comprising a first end insertable into one of said first shackle hole and said second shackle hole, a second end insertable into one of said first shackle hole and said second shackle hole, a first retaining groove located on the periphery of said first end for the engagement of one said latch, and a second retaining groove located on the periphery of said second end for the engagement of one said latch; and a cover plate, said cover plate comprising a plurality of mounting through holes respectively fastened to said second mounting holes of said lock body with a respective fastening member and sealed with a respective water seal, a cylinder hole, which receives said lock cylinder, and a bottom chamber fitting over the battery chamber of said housing of said alarm control device.