| 摘要 |
An electronic device includes a front plate, a top plate, and a switch control unit. The front plate defines a receiving hole therein. The switch control unit includes a mounting frame mounted on the front plate, a switch mounted in the mounting frame, a contact element located above the switch, and a control assembly. When the top plate completely covers the front plate, the top plate presses the contact element, and the contact element resiliently presses the switch to turn on the switch. When the top plate is pulled away from the front plate, the switch is turned off. The control assembly includes a first knob rotatably received in the mounting frame. The first knob includes a pressing portion. When the first knob is rotated from a first position to a second position, the pressing portion abuts against the switch to keep the switch on.
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