| 摘要 |
<p>PURPOSE:To prevent an automobile key from being forgotten to be pulled out of an ignition unit, by telling an automobile rider to pull the key of the ignition unit when the key is turned to stop an engine. CONSTITUTION:A ring 6 made of an electric insulator is fitted in a small hole 5 at one end of a key holder 1. A metal chain 7 is coupled to the ring 6. An electronic music box 8 is fitted as a miniature sound generator at the end of the metal chain 7. One end of a lead wire 9 is connected to one terminal 8a of the music box 8, while the other end of the wire is connected to the key holder 1. The metal chain 7 is connected to the other terminal 8b of the music box 8 through a lead wire 10. When the fingers of a driver have come into contact with the key holder 1 and the chain 7 on turning an automobile key to stop an engine, the key holder and the chain are connected to each other so that the music box 8 sounds.</p> |
