Stroller with spring-biased brake pins
OwnerRed Laninventor
Life of this patent
Estimating the term…
Abstract
A stroller includes a frame assembly with a pedal-mounting rod, on which a brake pedal is mounted rotatably. When the brake pedal is turned downward, a coupling mechanism activates two resilient elements to bias two brake pins to project from two pin holes in two mounting seats. At this time, in case the brake pins are aligned with two of a plurality of brake holes in two rear wheels, they are biased into the two brake holes. In case the brake pins are deflected from all of the brake holes, they are biased to press against the surfaces of the rear wheels. Under such conditions, the rear wheels are rotated slowly by pushing the stroller so as to permit the brake pins to be biased into two of the brake holes.
Claims8
A stroller comprising:
- a frame assembly including a horizontal pedal-mounting rod;
- a brake pedal having a pivot portion that is disposed rotatably on said pedal-mounting rod, a foot-engaging portion that extends rearward from said pivot portion, and a control portion that extends forward from said pivot portion;
- a coupling mechanism including a mounting rod that extends through said control portion, and a pair of push rods that are disposed movably on an intermediate portion of said mounting rod, that are located on two sides of said brake pedal, and that are capable of moving outward away from each other when said brake pedal is turned downward, each of said push rods having a coupling end that is distal to said brake pedal;
- two rear wheels, each of which includes a plurality of holes that are arranged along a circle, and an axle that is disposed at a center of said circle;
- and
- two brake mechanisms, each of which includes a mounting seat that is mounted to a respective end of said mounting rod and that is formed with a pin hole, a brake pin that is disposed movably within said pin hole in said mounting seat, and a resilient element, said push rods being connected respectively and movably to said mounting seats, said axles of said rear wheels being journalled respectively on said mounting seats, each of said resilient elements having a spring force-storing portion that is mounted to a respective one of said mounting seats, a rod-engaging portion that engages said coupling end of the respective one of said push rods so as to be moved relative to the respective one of said mounting seats by the respective one of said push rods, and a pin-driving portion that moves a respective one of said brake pins to engage one of said holes in a respective one of said rear wheels when said brake pedal is turned downward, thereby preventing rotation of the respective one of said rear wheels relative to said mounting seats.
Dependencies are inferred from the claim text.