Keyboard and terminal system comprising same

A keyboard detachably disposed on a terminal body, comprising:

• a keyboard body provided with key buttons on one surface;
• a receiving portion disposed on the one surface to receive at least a part of the terminal body;
• and
• a cover rotatably disposed on the one surface to cover at least a part of the receiving portion in a closed state and to expose the receiving portion in an open state,
• wherein the keyboard body is turned on and off depending on the opening and closing of the cover;
• a hinge module disposed at one end of the cover so that the cover can be rotated from the one surface of the keyboard body by a preset angle;
• a switch disposed on at least one of the one end of the cover and a part of the keyboard body facing the one end of the cover;
• and
• an opening and closing module disposed on the keyboard body to open and close the cover depending on an attachment and detachment of the terminal body,
• wherein the opening and closing module comprises:
• a mounting portion disposed on one side of the receiving portion to be movable along a mounting direction of the terminal body depending on the attachment and detachment of the terminal body;
• and
• a driving portion having one side connected to the mounting portion and being movable on the terminal body in cooperation with the movement of the mounting portion.