| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enhance security by increasing the number of patterns of a key code of a card key in a card key system. <P>SOLUTION: Only when a first pin tumbler 30a abuts on an inclined plane 10 of a hole 6h at an angle of 90°in this embodiment, the state of locking a slider 40 and a slider case 9 together is released, and the operation of shutting/opening a door lock can be performed. In other words, when the key code of the card key 1 is set, an angleαof penetration of a hole, an angle of abutment of a pin tumbler 30, corresponding to the angleα, to be exact, an angle between the central axis of the pin tumbler 30 and the inclined plane 10, and an angleβbetween an inclined plane 40s and a top surface of the slider 40 are changed in addition to the positions and sizes of the hole 6h and a holeless portion 6a, so that the number of the patterns of the key code can be increased while the size of the card key 1 is maintained. Thus, the security of the card key system can be enhanced. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
