Security device and child stroller

摘要

A security device for preventing unexpected folding and a child stroller therewith are disclosed. The security device uses a seat-plate locking part disposed on a seat plate to allow or constrain the folding of a rear leg assembly and a front leg assembly of the child stroller according to whether a child is sitting on the seat plate. When a child is sitting on the seat plate, the folding of the child stroller cannot be performed even though a frame positioning device is unlocked. Therefore, the invention can prevent a child sitting on the seat plate of the child stroller from getting hurt due to an unexpected folding of the child stroller.