Patent ID: 6979017

Claim:
A foldable frame assembly for use in a foldable stroller which includes front left and front right wheels spaced apart from each other in a longitudinal direction, rear left and rear right wheels spaced apart from each other in the longitudinal direction and spaced apart from said front left and front right wheels respectively in a transverse direction, and a handle extending in the longitudinal direction and spaced apart from the rear left and rear right wheels in an upright direction that is transverse to the transverse direction and the longitudinal direction, said foldable frame assembly comprising: left and right frame units which are spaced apart from each other in the longitudinal direction, said left frame unit being adapted to carry and to be disposed upwardly of the front and rear left wheels, said right frame unit being adapted to carry and to be disposed upwardly of the front and rear right wheels, one of said left and right frame units including three parts, wherein at least one of the three parts comprises: an anchored coupler which defines a first axis, and which has an anchored region extending along one of a second axis that is parallel to and that is offset from the first axis, and a radial line relative to the first axis, an anchoring coupler which has a proximate segment and a distal segment extending from said proximate segment along said one of the second axis and the radial line, a locking unit including a socket which is disposed on one of said anchored region and said proximate segment, and a plug which is disposed on the other one of said anchored region and said proximate segment, said socket and said plug being configured to mate with each other and to be movable relative to each other along said one of the second axis and the radial line and between a locked position, where said proximate segment is prevented from moving away from said anchored region along said one of the second axis and the radial line, and an unlocked position, where said proximate segment is permitted to be turned about a third axis which extends in the longitudinal direction, a linking lever which defines a length, and which has a connected end and a pivoted end opposite to said connected end along the length, and a linkage including an engaging end engaging said distal segment, and a coupling end pivoted to said pivoted end about the third axis such that when said locking unit is in the unlocked position, said connected end is turnable about the third axis to permit folding of said foldable frame assembly.