Patent ID: 11919559
Assignee: GOODBABY CHILD PRODUCTS CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 2:
3. The stroller according to claim 1, wherein the lower push rod is subjected to the following forces in its length direction: the component force g1 of the gravity G1 subjected by the push rod assembly in the length direction of the lower push rod, the component force g2 of the gravity G2 acting on the push rod assembly by other components connected with the push rod assembly in the length direction of the lower push rod, the impact force fa, and the component force fb of the force Fb acting on the lower push rod by the basket rod in the length direction of the lower push rod, and the frictional force f between the lower push rod and the sliding sleeve, and when the frame is converted from the unfolded state to the folded state, the directions of the component force g1, the component force g2 and the impact force fa are the same as the sliding direction of the lower push rod relative to the sliding sleeve, and the component force fb and the friction force f are opposite to the sliding direction of the lower push rod relative to the sliding sleeve, and (g1+g2+fa)/(fb+f)>1.