| 摘要 |
PROBLEM TO BE SOLVED: To provide an unlocking device which enables a reduction in cost and the miniaturization and simplification of the whole structure. SOLUTION: The unlocking device is equipped with a cylinder lock 2 which comprises a key plug 8 with a key inserting hole 81 opened on a key insertion-side end surface, and a clutch 4 for transmitting an unlocking motion of an operating handle 3 to a door lock mechanism. The key plug 8 includes a block 82 for preventing the destruction of the key plug, which is provided with a key inserting hole 82A for inserting a match key. The block 82 is rotatably arranged on the key insertion-side of the key inserting hole 81. COPYRIGHT: (C)2009,JPO&INPIT
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