Latch structure

A latch structure disposed in a first housing of an electronic device to latch a rotatable second housing to the first housing, the rotatable second housing being positioned between first and second positions with respect to the first housing, the latch structure comprising:

• a base;
• connecting units, each having a first side, a second side and two arms, each connecting unit disposed on the base, wherein the two arms are extended from the first side;
• first spring members, each having a first end and a second end, the first end connecting to a respective connecting unit and the second end connecting to the base;
• hook units, each being located at the first side of the respective connecting unit, each hook unit having a moving member with a hook portion and a connecting portion, the hook portion being rotated between first, second and third hook positions, each hook portion latching a structure of the rotatable second housing when each hook unit is at the second and third hook positions and unlatching the structure of the rotatable second housing when each hook portion is at the first hook position, each connecting portion and each connecting unit being substantially perpendicular to each other when the hook unit is in either second and third hook positions;
• and
• a button, located at the second sides of each connecting unit,
• wherein when the second housing is positioned in the second position with respect to the first housing, each hook portion is located in the second hook position, the button is moved forward in a first direction, the button will push each connecting unit in a second direction, and each pair of arms of the connecting units will touch the respective connecting portion of each hook unit, so that the hook portion turns to the first hook position to unlatch the latch structure, and
• wherein when second housing is positioned in the third position with respect to the first housing, each hook portion is located in the first hook position, the button is moved forward in the first direction, the button will push each connecting unit in the second direction, and each pair of arms of the connecting units will touch the respective connecting portion of each hook unit, so that the hook portion turns to the first hook position to unlatch the latch structure.