Patent ID: 7159833

Claim:
A coupling device for a portable terminal to couple a first member and a second member to be relatively slidable and horizontally rotatable one of the members having a keyboard unit section and one of the members having a display unit section in respectively separate boxes thereof, said coupling device comprising: a main body having a long guide groove extending in a longitudinal direction, the main body to be attached to the first member; a movable portion at least partly in the long guide groove and movable in the longitudinal direction and rotatable at a selected end position of the long guide groove, the movable portion to be attached to the second member to make the second member rotatable horizontally at the selected end position; an arresting means between said main body and said movable portion to stably halt the movable portion at a selected position; wherein said arresting means is composed of a pair of arresting plates slidably biased in mutually opposite directions to sandwich a portion of said movable portion, and; wherein the arresting means for halting said movable portion at the selected position comprises a protruding portion attached to said movable member in a slidably biased state in one direction and a recess portion provided on said main body to receive the protruding portion.