Patent ID: 8444170
Filing Date: 2013-05-21
Classification: B62B

Abstract:
1. A foldable stroller comprising a foldable frame, a seat disposed on said frame, as well as a plurality of front and rear wheels, said frame including a pair of rear-leg side rod sections, a pair of front-leg side rod sections, and a pair of back-frame side rod sections, said front and rear wheels being mounted respectively on bottom ends of said front-leg and rear-leg side rod sections, wherein said frame further includes two rear-leg connecting members connected respectively to said back-frame side rod sections, and two knuckles disposed respectively on bottom ends of said back-frame side rod sections, said rear-leg side rod sections being connected respectively and pivotally to said back-frame side sections by said rear-leg connecting members, respectively, such that any two adjacent ones of said back-frame side rod sections, said front-leg side rod sections, and said rear-leg side rod sections at one side can be pivoted toward each other, thereby folding said frame wherein each of said knuckles includes a first pivot member connected fixedly to said bottom end of a corresponding one of said back-frame side rod sections, and a second pivot member connected to a corresponding one of said front-leg side rod sections and connected pivotally to the first pivot member, wherein said first pivot member of each of said knuckles has a curved slide slot, said curved slide slot having two opposite closed first and second ends, and said second pivot member of each of said knuckles being provided with a sliding rod received movably within said slide slot such that, when said sliding rod is disposed within said first end of said slide slot, said frame is in an unfolded state, and when said sliding rod is disposed within said second end of said slide slot, said frame is locked in a folded state; wherein said frame further includes a pair of bottom rods each having a front end connected pivotally to a corresponding one of said front-leg side rod sections at a position adjacent to said bottom end of the corresponding one of said front-leg side rod sections, and a rear end connected pivotally to said bottom end of a corresponding one of said rear-leg side rod sections at a corresponding one of said rear wheels, such that, when said frame is folded, said back-frame side rod sections abut respectively against said front-leg side rod sections, and an assembly of said back-frame side rod sections and said front-leg side rod sections is disposed between said rear-leg side rod sections and said bottom rods; and wherein the rear-leg side rod sections and the bottom rods are each curved, such that the respective peak of the curvature of curve of the rear-leg side rod sections each correspondingly face away from the front wheels, and such that the respective peak of the curvature of curve of the bottom rods each correspondingly face away from the rear-leg connecting members, and such that the front end of each of the bottom rods respectively extend vertically higher relative to a horizontal support surface on which the foldable stroller supported on during use than the respective highest vertical point on each of the rear wheels; and wherein the rear wheels are larger in size than the front wheels.