| 摘要 |
A lock system, characterized by comprising a first lock (1), a second lock (2), unlocking prevention means (2a, 4) preventing the second lock (2) from being unlocked, unlocking prevention releasing means (7, 8) releasing the function of the second lock (2) unlocking prevention by the unlocking prevention means (2a, 4) according to the unlocking operation of the first lock (1), and unlocking prevention release state holding means (9, 10a, 10b, 10c, 12, 50) holding, for a specified period, the state where the function of the second lock (2) unlocking prevention is released.
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