Patent ID: 7061752

Claim:
A foldable electronic device comprising: a first member having a first top side with an edge portion, and a first positioning portion that extends along a first axis and that is disposed at said edge portion of said first top side; a second member having a second top side with an edge portion, and a second positioning portion that extends along a second axis parallel to the first axis and that is disposed at said edge portion of said second top side; and a coupling unit for interconnecting pivotally said first and second members, said coupling unit including a coupling link having a first end portion retained rotatably at said first positioning portion, and a second end portion opposite to said first end portion in a longitudinal direction transverse to the first and second axes, a slide link extending along the longitudinal direction, disposed beside said coupling link, retained slidably on said coupling link for sliding along the longitudinal direction, and retained rotatably at said second positioning portion, and a biasing member for pulling said slide link toward said first member; said coupling unit permitting movement of said second member in sequence from an unfolded position, a first intermediate position, a second intermediate position, and to a folded position relative to said first member; said first and second top sides of said first and second members facing upwardly when said second member is in the unfolded position; said second member being operable to pull said slide link away from said first member against action of said biasing member when moving said second member from the unfolded position to the first intermediate position, where a clearance is formed between said edge portions of said first and second top sides of said first and second members; said second member being further operable to cause said coupling link to pivot about the first axis when moving said second member from the first intermediate position to the second intermediate position; said second member being further operable to cause said slide link to pivot about the second axis when moving said second member from the second intermediate position to the folded position, where said first and second top sides of said first and second members face each other.