Patent ID: 9637155
Date: 2017-05-02
CPC Classifications: B62B,F16B

Claim:
1. A locking mechanism for opening and folding a baby stroller comprising: an outer tube of a handle disposed with a first pivot member, a front wheel frame arranged with a second pivot member, and a rear wheel frame set with a third pivot member; wherein the second pivot member of the front wheel frame is mounted into a front part of the first pivot member of the outer tube while the third pivot member of the rear wheel frame is mounted into a middle part and a rear part of the first pivot member of the outer tube; the first pivot member of the outer tube and the second pivot member of the front wheel frame are coaxially connected to a front part of a side piece while a middle part of the side piece is coaxially connected to a front part of the third pivot member of the rear wheel frame; a rear part of the side piece is coaxially connected to the rear wheel frame and a rear part of the third pivot member of the rear wheel frame; wherein a middle part of a locking hook is pivotally connected to a stopping frame of the first pivot member of the outer tube and a first end of the locking hook is extended into the outer tube; a second end of the locking hook is hooked on a locking rod correspondingly while the locking rod is disposed on the third pivot member of the rear wheel frame; the handle further includes an inner tube mounted and movable in the outer tube; a push button for folding is arranged between the outer tube and the inner tube; the inner tube is moved downward in the outer tube until a bottom end of the inner tube presses the first end of the locking hook so that the second end of the locking hook is released from the locking rod and the baby stroller is folded; the stopping frame of the first pivot member of the outer tube and the third pivot member of the rear wheel frame are engaged with and stopped by each other so as to increase locking strength of the baby stroller being opened backward when the baby stroller is opened to use.