Patent ID: 8145259

Claim:
A mobile terminal device comprising: a first case configured to include a display section; a second case configured to include a keyboard; and a slide holding mechanism configured to, in accordance with sliding movement of the first case with respect to the second case in the opening direction from a closed state in which the first case is substantially fully superimposed on the second case, expose at least a part of the keyboard of the second case and bring the cases into an open state in which the first case is inclined with respect to the second case, wherein the slide holding mechanism includes a slide pin having a substantially cylindrical shape and configured to include guide shaft insertion holes piercing through one side surface portion and the other side surface portion thereof, a guide shaft inserted in the guide shaft insertion holes of the slide pin to hold the slide pin to be movable along the longitudinal direction of the guide shaft and rotatable along the circumferential direction of the guide shaft, a biasing member having one end portion connected to the slide pin and the other end portion connected to the second case to bias the slide pin in the opening direction, to thereby rotate the slide pin along the circumferential direction of the guide shaft, an arm member having one end portion connected to the slide pin and the other end portion connected to the first case to hold the slide pin to be movable along the longitudinal direction of the guide shaft and rotatable along the circumferential direction of the guide shaft, and a guide plate provided to the second case with the slide pin inserted therein, and configured to include a guide hole which, in the closed state of the cases, regulates the rotation of the slide pin along the circumferential direction of the guide shaft, and which, when the cases are brought into the open state, removes the regulation and allows the slide pin to rotate along the circumferential direction of the guide shaft, to thereby allow the first case to incline with respect to the second case in accordance with the rotation.