Patent ID: 8733787
Filing Date: 2014-05-27
Classification: B62B

Abstract:
1. A baby carriage, comprising a foldable frame, a seat disposed on the frame, a locking mechanism for locking the frame when it is unfolded, a first front wheel assembly and a second front wheel assembly, and a first rear wheel assembly and a second rear wheel assembly disposed at the bottom of the frame, wherein the frame comprises: a first front bracket, at a lower portion of which the first front wheel assembly is arranged; a second front bracket, at a lower portion of which the second front wheel assembly is arranged; a first seat rod on which the seat is disposed, with a front portion of the first seat rod being rotatably connected to the first front bracket, and a rear portion of the first seat rod being provided with the first rear wheel assembly; a second seat rod on which the seat is disposed, with a front portion of the second seat rod being rotatably connected to the second front bracket, and a rear portion of the second seat rod being provided with the second rear wheel assembly; a first push rod, comprising a first lower push rod with a lower portion being rotatably connected to an upper portion of the first front bracket or the front portion of the first seat rod and a first upper push rod slidably connected to the first lower push rod, wherein the first upper push rod and first lower push rod are locked with each other when the frame is unfolded, and the first upper push rod can slide relative to the first lower push rod when the frame is in the course of folding or unfolding; a second push rod, comprising a second lower push rod with a lower portion being rotatably connected to an upper portion of the second front bracket or the front portion of the second seat rod and a second upper push rod slidably connected to the second lower push rod, wherein the second upper push rod and second lower push rod are locked with each other when the frame is unfolded, and the second upper push rod slides relative to the second lower push rod when the frame is in the course of folding or unfolding; a first rear bracket with a lower portion being rotatably connected to the first seat rod; a second rear bracket with a lower portion being rotatably connected to the second seat rod; a first sliding element for connecting the first upper push rod with an upper portion of the first rear bracket, the first sliding element is slidably disposed on the first upper push rod and the first rear bracket, and the first upper push rod and the first rear bracket rotatably connected to the first sliding element; a second sliding element for connecting the second upper push rod with an upper portion of the second rear bracket, the second sliding element is slidably disposed on the second upper push rod and the second rear bracket, and the second upper push rod and the second rear bracket rotatably connected to the second sliding element; wherein when the frame is unfolded, the first push rod and the second push rod have two working positions, comprising a first working position where the fist push rod and the second push rod incline backwards from down to up with an upper end being located behind and above the seat, and a second working position where the first push rod and the second push rod incline forwards from down to up with its upper end being located in front of and above the seat, when the frame is folded the front and rear wheel assemblies support the frame on a plane.