Patent ID: 7267359

Claim:
A collapsible stroller frame, comprising: a front supporter, including a handle portion and a leg portion, wherein a lower end of the leg portion is provided with a front wheel set; a rear supporter, having an upper end pivotally connected to the front supporter and a lower end provided with a rear wheel set; a sliding sleeve, movably mounted on the front supporter, wherein the sliding sleeve detachably locks the frame into an expanded position; and a foldable supporter, including a front folding tube and a rear folding tube pivotally connected to each other, the foldable supporter being pivotally connected between the front supporter and the rear supporter; and a link rod, connected between the sliding sleeve and the foldable supporter, wherein upon folding the frame, the sliding sleeve is released from the frame, thereby driving the foldable support, and wherein the sliding sleeve moves down the front supporter in connection with the link rod, thereby causing the front folding tube and the rear folding tube to fold into a V-shape to draw the front supporter close to the rear supporter into a folded position.