| 摘要 |
A rotation key device for a portable terminal which includes a rotation key configured to rotate in forward and reverse directions. The rotation key device comprises a base plate, which is attached, at a lower surface thereof, to an upper surface of a first printed circuit board (PCB) mounted in a body of the portable terminal. A second PCB is attached to the upper surface of the base plate and is provided with a plurality of contact surfaces. A ring-shaped washer is attached to the upper surface of the second PCB, a rotation key is attached to the upper surface of the ring-shaped washer so that it can rotate in forward and reverse directions by a force applied thereto, a contact plate is provided in the rotation key, with a plurality of contact terminals, and a fixed button is coupled with the center of the rotation key so that the rotation key is rotatable.
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