| 摘要 |
PURPOSE: To reduce interference of magnetic force between a key cylinder outer and a coil antenna, and also to improve the output characteristic of magnetic force from the key side coil to the cylinder outer side coil antenna. CONSTITUTION: In a key cylinder device 100 provided with a coil antenna for giving and receiving an ID code by the magnetic coupling of the key side to the coil antenna, the coil antenna is disposed on the end face of the key insert hole 50 side of a key cylinder outer 80. With the key inserted in the key insert hole 50, the key is disposed near the key side coil antenna. |
