Gate structure and electronic device using the same

An electronic device, comprising:

• a body having two opposing lateral surfaces and two cavities disposed on the two lateral surfaces, respectively;
• two gate structures disposed on the two lateral surfaces, respectively, to open and close the two cavities, respectively, the gate structures each comprising:
• a first door-leaf movably disposed in the cavities of the body and having three first locking portions;
• a second door-leaf disposed at the first door-leaf movably along a first axis to get engaged with the body or released from the body, such that the first door-leaf closes or opens the cavities, wherein the second door-leaf has two second locking portions;
• and
• a latch disposed at the first door-leaf movably along a second axis and disposed between the first door-leaf and the second door-leaf, wherein the latch has a third locking portion and a fourth locking portion;
• wherein the first axis is different from the second axis,
• wherein the three first locking portions are arranged along the second axis and located at a moving path of the third locking portion along the second axis,
• wherein, as soon as the second door-leaf gets engaged with the object and the third locking portion gets positioned at a middle one of the first locking portions, the fourth locking portion is blocked at a moving path of one of the second locking portions along the first axis, such that the first door-leaf covers the cavity and is fixed thereto,
• wherein the two latches of the two gate structures move along the second axis and in a first direction, respectively, such that the third locking portion moves to the middle one of the first locking portions.