A Keyboard of a personal digital assistant

PURPOSE: A keyboard for a PDA(Personal Digital Assistant) is provided to fold and unfold the keyboard by attaching it in a normal direction, to hold the keyboard to the backside of the PDA by attaching it in a reverse direction, and to carry the keyboard by separating from the PDA. CONSTITUTION: A hinge(11) includes an upper and a lower hinge cover(18,20) having two guiding projections(19), a pin-contact connector(16), and a pipe hinge(26). An attaching device(13) comprises two bracket hinges(10) inserted into the PDA by placing in the upper and the lower cover, a spring(12) installed at a side of the bracket hinge, and an ejector(14) placed between the bracket hinges. A keyboard main body(23) includes an upper and a lower keyboard case(24,25), a keypad, and an FPC(Flexible Printed Circuit) keypad placed in the upper and the lower keyboard case. The keyboard main body surrounds an outside diameter of the pipe hinge and is connected to the hinge. The pin-contact connector transfers a signal inputted to the FPC keypad to the PDA by connecting to the FPC keypad.