Patent ID: 8444172

Claim:
A basket frame of a stroller, comprising: a front frame; a rear frame; and a connecting device connected between the front frame and the rear frame, the connecting device comprising: a first connector connected to the front frame and having a first pivot part; a second connector connected to the rear frame and having a second pivot part, the second pivot part being pivotally connected to the first pivot part so that the rear frame can pivot relative to the front frame; and a torsion spring provided between the first pivot part and the second pivot part, two ends of the torsion spring being respectively placed against the first pivot part and the second pivot part, wherein an application of a downward force on the rear frame deforms the torsion spring and causes the rear frame to pivot downward, and a removal of the downward force causes a spring return to make the rear frame to return to a fixed position, wherein the first pivot part has a first positioning block and the second pivot part has a second positioning block, and when the rear frame is placed at the fixed position, the torsion spring biases the first pivot part and the second pivot part so that the first positioning block abuts against the second positioning block and thus the rear frame is prevented from pivoting upward beyond the fixed position, wherein each of the first pivot part and the second pivot part has a pivot shaft, a groove bottom and a groove wall; the pivot shaft and the groove wall project from the groove bottom; the pivot shaft, the groove bottom and the groove wall define a ring groove around the pivot shaft; and the pivot shaft is placed into the torsion spring, and wherein each of the first positioning block and the second positioning block is in form of a rib and each rib is formed in the ring groove and projects from the corresponding groove bottom with a projection height greater than that of the groove wall, so that an engagement of the groove wall of the first pivot part with the groove wall of the second pivot part allows the first positioning block to abut against the second positioning block.