| 主权项 |
1. A lock mechanism for detachably fixing a cover on a side of a casing, the lock mechanism comprising:
a lock rod having a first end, a second end and a pivot portion between the first end and the second end, the lock rod being pivoted to one of the cover and the casing through the pivot portion so that the first end and the second end could perform a lever movement relative to the pivot portion, and the first end having an interference portion; and a driving arm connected to a side of the lock rod and having a fixing portion and an arm portion connected to the fixing portion, the driving arm being disposed on the one of the cover and the casing through the fixing portion so as to make a free end of the arm portion interfere with the interference portion of the lock rod, and the arm portion swinging to a first swing position when receiving force in a first direction or swinging to a second swing position when receiving force in a second direction opposite to the first direction; wherein the interference portion drives the free end of the arm portion to make the arm portion swing to the first swing position or the second swing position when the first end or the second end is pressed, so as to make the lock rod move to a locking position for fixing the cover on the casing or move to a releasing position for releasing the cover from the casing. |
