Locking mechanism

A locking mechanism, comprising:

• a first shell, having a first carrying surface, a second carrying surface opposite to the first carrying surface, and an open hole penetrating through the first carrying surface and the second carrying surface;
• a second shell, having a third carrying surface facing the second carrying surface and comprising a fixing hole recessed in the third carrying surface, wherein a diameter of the fixing hole is less than a diameter of the open hole;
• a waterproof ring, clamped between the second carrying surface and the third carrying surface;
• and
• a locking component, penetrating through the open hole of the first shell, the waterproof ring and the fixing hole so as to be locked to the second shell and having a first abutting surface and a second abutting surface, wherein the first abutting surface abuts against the first carrying surface, and the second abutting surface passes through the open hole to abut against the third carrying surface, so that the waterproof ring is pressed between the second carrying surface and the third carrying surface.