| 摘要 |
A key-cylinder with a wrong unlocking prevention structure is provided to prevent damage to a key cylinder due to wrong unlocking and drilling by installing an inner container pin corresponding to an outer container pin. A key-cylinder with a wrong unlocking prevention structure comprises inner containers(20a) inserted into an outer container(10) having more than one outer container pin(13). The inner containers are rotated from the outer container according to the rotation of a key as the same time as unlocking of an inner container pin(25) when the key is inserted. The inner containers divided into more than two include the inner container pin corresponding to the outer container pin to prevent damage to a key cylinder(1a) due to the wrong unlocking and drilling by intruders. A front surface of the front inner container and a front surface of the outer container are protruded in an arc shape with the same radius.
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