Patent ID: 8654534

Claim:
An electronic device comprising: a cabinet defining a front window therein; and an electronic unit accommodated in the cabinet, the electronic unit comprising a casing, the casing comprising: a front end and a rear end of capable of being engaged to the cabinet, a top plate; a lateral side defining an engaging opening therein; and a rotator movably connected to the casing and comprising an engaging portion and an abutting portion, the abutting portion extending above the top plate, and the engaging portion being received in the casing, wherein when the abutting portion is pushed down, the rotator moves to cause the engaging portion to extend through the engaging opening to engage with the cabinet and to prevent the casing from being pulled out from the cabinet; wherein an abutting surface is formed on a main body of the abutting portion, and a transitioning surface is formed on the engaging portion corresponding to the abutting surface, and when the abutting portion is pushed down, the abutting surface pushes the transitioning surface to cause the engaging portion to extend through the engaging opening to engage with the cabinet; and wherein a first end of the engaging portion is elastically connected to the casing via an elastic element, and a second end of the engaging portion opposite to the first end is to extend through the engaging opening and engages with the cabinet.