Patent ID: 6267405
Filing Date: 2001-07-31
Classification: B62B

Abstract:
A foldable stroller comprising:a rear wheel axle with two lateral ends which are provided with two rear wheels;a pair of rear legs disposed to be parallel to and spaced apart from each other in an axial direction that is parallel to said rear wheel axle, each of said rear legs having a lower anchored leg end mounted on a respective one of said lateral ends of said rear wheel axle, and an upper anchored leg end extending upwardly from said lower anchored leg end;a pair of hollow handle tubes disposed to be parallel to and spaced apart from each other in the axial direction, each of said hollow handle tubes havinga lower tubular end having a forward enlarged portion with a forward wall extending in the axial direction, and a right lateral wall joining said forward wall and facing the axial direction,an upper tubular end, andan intermediate tubular section disposed between said lower and upper tubular ends, and mounted pivotally to said upper anchored leg end of a respective one of said rear legs about the axial direction such that said upper tubular end is foldable downwardly and forwardly onto the respective one of said rear legs to place said hollow handle tubes in a first folded position, and is stretchable upwardly and rearwardly from the respective one of said rear legs to place said hollow handle tubes in a first stretched position;a front leg frame including a front wheel rod which is provided with a front wheel, and a pair of front legs, each of said front legs havinga lower leg end connected to said front wheel rod,an upper leg end which, when said front legs are in a second stretched position, extends upwardly, rearwardly and in a first transverse direction relative to the axial direction from said lower leg end, and which has a rearward enlarged portion with a rearward wall extending in the axial direction and confronting said forward wall of said lower tubular end of a respective one of said hollow handle tubes in the first transverse direction, and a right lateral section joining said rearward wall and facing the axial direction, said right lateral section being pivotally mounted to said right lateral wall of said lower tubular end of a respective one of said hollow handle tubes at a first pivot point about the axial direction such that when said hollow handle tubes are moved from the first folded position to the first stretched position, said right lateral wall moves from a first angular position where said right lateral wall overlaps slightly with said right lateral section, to a second angular position where said right lateral wall overlaps extensively with said right lateral section, andan intermediate leg section between said upper and lower leg ends;a pair of bracing rods, each having a rear end which is mounted pivotally to a respective one of said rear legs and proximate to said lower anchored leg end about the axial direction, and a front end which is mounted pivotally to said intermediate leg section of a respective one of said front legs about the axial direction such that when said front legs are in a second folded position, said lower leg ends of said front legs will be turned about the axial direction and towards said bracing rods so as to be brought closer thereto for collapsing;a pair of locking members, each including a front hooked portion disposed on said right lateral section of said upper leg end of a respective one of said front legs and extending in the axial direction, and a rear hooking portion having a hooking end and pivotally mounted on said right lateral wall of said lower tubular end of a respective one of said hollow handle tubes at a second pivot point about the axial direction such that when said right lateral wall is in the second angular position and said rear hooking portion is actuated to turn about the axial direction, said hooking end is brought to engage said front hooked portion;a pair of plungers, each disposed in said intermediate tubular section and extending into said upper tubular end of a respective one of said hollow handle tubes, each of said plungers being movable in the first transverse direction, and having an actuated end and a coupling end opposite to each other in the first transverse direction, said coupling end being moved towards said forward enlarged portion so as to push said rear hooking portion of a respective one of said locking members to turn about the axial direction;a pair of actuating members, each disposed on and movable relative to said upper tubular end of a respective one of said hollow handle tubes in the first transverse direction so as to actuate said actuated end of a respective one of said plungers; anda pair of biasing members, each biasing said coupling end of a respective one of said plungers to move in the first transverse direction and towards said upper tubular end of the respective one of said hollow handle tubes.