US Patent 10383242 Electronic device

An electronic device includes a main body, a handle, a fastening block element, a controlling unit, and a driving element. The handle is connected to one side of the main body and has a fastening groove. The fastening block element is disposed in the main body and detachably engaged with the fastening groove. The controlling unit is disposed in the main body and sends an unlocking signal after a shutdown process is performed. The driving element is disposed in the main body and electrically connected to the controlling unit. After the driving element receives the unlocking signal, the fastening block element is released from the fastening groove, thereby enabling the handle to protrude from the main body.