| 摘要 |
PROBLEM TO BE SOLVED: To provide a lock device capable of remarkably increasing the number of combination kinds of keys in the lock device, particularly the horseshoe-shaped lock device for a bicycle. SOLUTION: The lock device comprises a casing, a bolt piece, a locking member for maintaining a locked state, and a key piece for unlocking by moving the locking member. The lock device comprises a first key combination formed of a combination of a recessed part formed near a key piece insertion hole of a locking member storage part and a lower face projecting part provided in a downward direction of the key piece so as to correspond to the recessed part, a second key combination formed of a combination of a slotted part 28 formed with an upper casing 20 facing upward and an upper face projecting part 37 provided to project in an upward direction of the key piece 13 so as to correspond to the slotted part 28, and a third key combination formed of a combination of a protrusion projected into the locking member storage part and a recess provided at the key piece so as to correspond to the protrusion. Unlocking is performed when these key combinations are placed in an unlockable state. COPYRIGHT: (C)2010,JPO&INPIT |
