| 摘要 |
A lock includes a combination code device, a pin, and at least one fixing unit. The combination code device has a plurality of code input units. When the code combination of the code input units is different from a preset combination, the lock is in a locked state, so the pin is engaged with the combination code device and cannot be moved or rotated. When the code combination of the code input units is the same as the preset combination, the lock is in an unlocked state, so the pin can be moved or rotated. When the fixing unit is at a first position, the code combination of the code input units can be changed; when it is at a second position, it fixes at least one code input unit, and at least part of the code combination of the code input units can not be changed. |
