Patent ID: 6761051
Filing Date: 2004-07-13
Classification: E05B,Y10T

Abstract:
An electric padlock comprising:a lock casing having a top wall with first and second shackle insert holes formed therein; an inverted U-shaped shackle member having a longer leg portion movably disposed in said second shackle insert hole, and a shorter leg portion parallel to said longer leg portion and extendible into said first shackle insert hole, said shorter leg portion being formed with a shackle groove formed therein; a first biasing spring mounted in said second shackle insert hole for biasing said longer leg portion upwardly; a latch member received in said lock casing and movable between a locking position in which said latch member is moved toward said first shackle insert hole for engaging said shackle groove in said shorter leg portion of said shackle member when said shorter leg portion is inserted into said first shackle insert hole so as to lock said shackle member on said lock casing, and an unlocking position in which said latch member is moved away from said first shackle insert hole for disengaging from said shackle groove to permit upward movement of said shorter leg portion by virtue of biasing action of said first biasing spring so as to unlock said shackle member from said lock casing; a key-operated lock unit received in said lock casing, said lock unit including a lock core device with a latch actuator, and a key which is insertable into said lock core device for operating said latch actuator, said latch actuator engaging said latch member and moving said latch member from said locking position to said unlocking position when said key is operated; and an electric operating unit including a drive motor mounted in said lock casing and operable for moving said latch member from said locking position to said unlocking position, and a remote controller which is operable to provide an electric signal to said drive motor for controlling operation of said drive motor; said lock core device and a rotary transmission shaft of said drive motor being disposed parallel to each other and being adjacent to a same side surface of said latch member.