Patent ID: 8393692

Claim:
A sliding mechanism, comprising: an outer rail; an inner rail; a middle rail between the outer rail and the inner rail, the middle rail having a resisting portion protruding therefrom, the middle rail slidably mounted to the outer rail in a first direction and the inner rail slidably mounted to the middle rail in the first direction; a latching assembly including a first protrusion positioned at the inner rail, a second protrusion positioned at the inner rail and spaced apart from the first protrusion, a third protrusion positioned at the outer rail, a first roller and a second roller being slidably mounted on the middle rail in a second direction perpendicular to the first direction, a latching slot defined in the outer rail communicating with the third protrusion and a stopping surface defined in the latching slot opposite to the third protrusion; wherein the middle rail defines a first guiding groove to guide the first roller to slide relative to the middle rail in the second direction and a second guiding groove to guide the second roller to slide relative to the middle in the second direction; when the inner rail slides relative to the middle rail in the first direction, the second roller slides along the second protrusion until the first protrusion slides to and latches the first roller to make the middle rail sliding with the inner rail; and then the second roller slides along the third protrusion and the second guiding groove, the first roller slides to and along the third protrusion so the first roller slides along the first guiding groove relative to the middle rail in the second direction to release the first roller from the first protrusion and the second roller slides in the latching slot from the third protrusion in the first direction until the resisting portion resists the stopping surface to prevent the middle rail from sliding relative to the outer rail such that the first roller slides along the first protrusion to make the inner rail further extends relative to the middle rail.