Patent ID: 7219918

Claim:
A stroller comprising: a stroller frame with a leg rod; a wheel unit mounted to a lower end of said leg rod and including an axle and a first wheel disposed on and rotatable about said axle, said first wheel being formed with a plurality of retaining grooves that are arranged along a circumferential direction thereof; and a brake device including a wheel seat for supporting said first wheel on said leg rod, a reciprocating mechanism including a driving seat that is disposed movably on said wheel seat and that is movable along a straight path between a braking position and a non-braking position, a control cable having a controlling end and a pulling end, said pulling end being fastened to said driving seat, said controlling end being disposed on said stroller frame and being operable to move said driving seat between said braking position and said non-braking position, and a first swing member disposed rotatably on said wheel seat and including a first swing arm connected to said driving seat of said reciprocating mechanism such that movement of said driving seat relative to said wheel seat results in rotation of said first swing member relative to said wheel seat, and a second swing arm rotatable between an engagement position, where said driving seat is disposed at said braking position and where said second swing arm engages one of said retaining grooves in said first wheel so as to prevent rotation of said first wheel, and a disengagement position, where said driving seat is disposed at said non-braking position and where said second swing arm is removed from said first wheel so as to allow for the rotation of said first wheel.