Patent ID: 8199475

Claim:
An electronic device, comprising: a first body; a second body, stacked on the first body, wherein an end of the second body has a first fulcrum slidably disposed on the first body; a linkage, located between the first body and the second body, wherein the linkage has a first end pivotally connected to the first body via a pivot and a second end slidably disposed on the second body via a second fulcrum, and a projection of the second fulcrum on the first body is located between the first fulcrum and the pivot; a first sliding block slidably disposed at the bottom of the second body, wherein the second end of the linkage is pivotall connected to the first sliding block to form a second fulcrum; and a first elastic member disposed between the first sliding block and the second body to provide an elastic force for driving the first sliding block to slide relative to the second body, when the electronic device is transformed from a retracted state to an expanded state, the second body slides relative to the first body and protrudes from a side of the first body, the second fulcrum of the linkage slides on the second body, and the second fulcrum reaches a critical position on the second body to have the first fulcrum and the second fulcrum being spaced in a minimum distance, and then, the second fulcrum is raised and the first fulcrum proceeds to slide relative to the first body in the same direction, the second body is pivoted relative to the first body via the first fulcrum in a first direction, and the linkage is pivoted relative to the first body via the pivot in a second direction opposite to the first direction to transform the electronic device to the expanded state, wherein the first body and the second body forms an included angle greater than or equal to 90 degrees and less than 180 degrees.