Patent ID: 7877122

Claim:
A folding portable electronic device including: a first housing including a display part provided at a surface thereof; a second housing including an operating part provided at a surface thereof; and a hinge connecting the first and second housings to allow the first and second housings to be freely opened and closed in their folded form, the display part being supported to the first housing through a support mechanism changeably between a vertical position and a horizontal position, wherein the support mechanism comprises a cam mechanism including: a first guide groove formed in the first housing and composed of an upcurved left section and an upcurved right section continued to the left section; a second guide groove formed in the first housing away from the first guide groove; a first guide pin slidably engaged into the first guide groove; a second guide pin slidably engaged into the second guide groove; and a link member provided to the back face of the display part and connecting the first and second guide pins to each other, the cam mechanism supports the display part to allow the display part to turn clockwise and counterclockwise as viewed from the front, and the cam mechanism includes an urging mechanism urging the second guide pin to allow the display part to reach the vertical or horizontal position both clockwise and counterclockwise.