| 摘要 |
PURPOSE: A bike lock having an alarm function is provided to prevent a bike from being stolen by installing an alarm inside the lock. CONSTITUTION: A bike lock having an alarm function comprises a case(10), an alarm generating circuit(20), a speaker(30), a battery(40), a short-detecting loop wire(50), and a wire(60). The alarm generating circuit is installed on the top of the case. The speaker is installed on the alarm generating circuit. The battery is installed inside the case. The short-detecting loop wire is connected from the alarm generating circuit to the inner end of the wire. One end of the wire is connected to one side of one surface of the case, and the other end is connected to the other side of one surface.
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