Patent ID: 6921102

Claim:
A foldable stroller, comprising: a foldable supporting frame; a handle frame comprising two pivot arms extending downwardly; two folding joints for pivotally connecting two lower ends of said pivot arms to two sides of said supporting frame respectively; an engagement unit comprising two first engaging members provided at two lower ends of said pivot arms of said handle frame respectively and two second engaging members provided at said two folding joints and securely engaged with said two first engaging members respectively, so as to lock up said handle frame with respect to said supporting frame; and a one-hand operational control device, said one-hand operational control device comprising: a turn switch which is arranged to drive said first engaging members to disengage with said second engaging members respectively, said turn switch comprising a central shaft and a turning handle, wherein said central shaft has a pusher cavity and is firmly and coaxially mounted between two upper ends of said pivot arms, wherein said turning handle, which has a guiding slot and one or more blocking walls inwardly extended towards said pusher cavity, is rotatably and coaxially mounted on said central shaft and arranged to drive said first engaging members to disengage with said second engaging members respectively; a locking unit comprising a locking latch disposed in said pusher cavity of said turn switch in a slidably movable manner and a finger trigger extended from said locking latch to outside through said guiding slot; and a resilient unit, which is disposed in said pusher cavity, applying an urging pressure against said locking latch so as to normally retain said locking latch in a locking position, wherein in said locking position, a locking portion of said locking latch is extended outwardly and blocked by said blocking walls to block any rotation of said turn switch, so as to lock said foldable stroller from being folded up; wherein said locking latch is arranged to be driven by said finger trigger to move from said locking position to an unlocked position, wherein in said unlocked position, said locking portion of said locking latch is moved away from said blocking walls of said turn switch so that said turn switch is unblocked and free to rotate with respect to said pivot arms to disengage said first engaging members with said second engaging members respectively.