| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive lock device excellent in theft preventing property and operability by providing, on rear wheel, a circle lock having a transceiver, which is unlocked according to the instruction from a transmitter and outputs an unlocking command to a box-shaped lock provided on a front wheel. SOLUTION: A circle lock 1 is stationarily mounted on a rear wheel 10A side, and it comprises a transmitting and receiving unit for receiving the radio waves from a transmitter 30 and transmitting an unlocking command to a box-shaped lock 15, an actuator and the like. The box-shaped lock 15 is stationarily mounted on a front wheel 10B side, and it comprises a receiving unit, an actuator and the like. When an unlocking code having an ID code is transmitted from the transmitter 30 in the locked state, the transmitting and receiving unit of the circle lock 1 drives the actuator to lay the circle lock 1 into the unlocked state, and outputs an unlocking command to the box-shaped lock 15 by radio waves. When the unlocking command is received, the receiving unit of the box-shaped lock 15 drives the actuator to lay the box-shaped lock 15 into the unlocked state. According to this, a plurality of lock devices can be surely unlocked in the vicinity of the transmitting distance limit, and the operability can be improved.
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