Patent ID: 7319892

Claim:
A slide mechanism of a portable terminal device which is a mechanism for relatively sliding a first casing and a second casing in a state that the casings are laid over each other in a vertical direction, said slide mechanism comprising: a base member mounted on either one of the first casing and the second casing; a slider slidably mounted on said base member and mounted on the other one of the first casing and the second casing; and a resilient means, which is disposed between said slider and said base member, for slidably biasing said slider in a closing direction and/or an opening direction from predetermined slide positions, by being displaced according to a slide position of said slider; wherein, between said base member and said slider, a guide member guiding slide of said slider is separately provided; and wherein said resilient means is a torsion spring and the torsion spring is mounted so that a direction of action of resilience thereof is displaced according to slide operation of said slider, by one end side of the torsion spring being pivotally supported on said base member and the other end side of the torsion spring being pivotally supported on said slider.