Patent ID: 8840334

Claim:
A tiltable linkage mechanism, comprising: a first plate including a first upper surface and a first bottom surface opposite to the first upper surface; a second plate including a second upper surface, a second bottom surface opposite to the second upper surface, and a position limiting structure, wherein the second bottom surface faces towards the first upper surface of the first plate, and the position limiting structure is disposed on the second bottom surface and has two opposite clamping surfaces; a first hinge pivotally connected with the second plate and the first plate; a swinging plate; a second hinge pivotally connected with the swinging plate and the first plate; and a third hinge disposed within the position limiting structure to pivotally connect with the swinging plate and the second plate, wherein the third hinge has an end portion slidably clamped by the two clamping surfaces; whereby when the second plate is tilted from the first plate, the second plate rotates about the first hinge, the swinging plate rotates about the second hinge, and the end portion of the third hinge slides within the position limiting structure from a first position to a second position; wherein the position limiting structure includes a cantilever plate and a protrusion opposite to the cantilever plate, the cantilever plate and the protrusion form the two clamping surfaces respectively to define a clamping space, and the position limiting structure is in an inverted-U-shaped configuration; wherein the position limiting structure extends downward from the second bottom surface toward the first upper surface, the cantilever plate is resiliently biased in a direction toward the second bottom surface, and the clamping surface of the cantilever plate is located between the second bottom surface and the first upper surface; and wherein at least one of the two clamping surfaces is formed with a plurality of stopping grooves for the end portion of the third hinge to optionally slide thereon.