초록 ▼

A baby stroller includes a frame having front and rear wheel supports, a seat rod, a push rod and a support rod. The front and rear wheel supports form a first rotating joint. The push rod includes upper and lower push rods, the lower push rod is connected to the first rotating joint. The lower push

A baby stroller includes a frame having front and rear wheel supports, a seat rod, a push rod and a support rod. The front and rear wheel supports form a first rotating joint. The push rod includes upper and lower push rods, the lower push rod is connected to the first rotating joint. The lower push rod and the upper push rod form a second rotating joint. The support rod is rotatably connected with the upper push rod. The support rod is rotatably connected with the rear wheel support. The seat rod is rotatably connected with the front wheel support. The seat rod is rotatably connected with the support rod. Rotating the upper push rod around the second rotating joint drives the lower push rod, the support rod, the front wheel support, the rear wheel support and the seat rod to fold the stroller.

대표청구항 ▼

1. A baby stroller, comprising a frame with an unfolded state and a folded state, front wheels provided in the front portion of the frame at the bottom, rear wheels provided in the rear portion of the frame at the bottom, and a locking mechanism for locking the frame in the unfolded state, wherein t

1. A baby stroller, comprising a frame with an unfolded state and a folded state, front wheels provided in the front portion of the frame at the bottom, rear wheels provided in the rear portion of the frame at the bottom, and a locking mechanism for locking the frame in the unfolded state, wherein the frame comprises a front wheel support a lower portion of which connected with the front wheels, a rear wheel support a lower portion of which connected with the rear wheels, a seat rod, a push rod and a support rod; the front wheel support and the rear wheel support intersect to form a first rotating joint, and are both capable of rotating around the first rotating joint; the push rod comprises an upper push rod and a lower push rod, a lower portion of the lower push rod being rotatably connected to the first rotating joint, an upper portion of the lower push rod and the upper push rod intersecting to form a second rotating joint; an upper portion of the support rod is rotatably connected with the upper push rod, a lower portion of the support rod is rotatably connected with the rear wheel support, a front portion of the seat rod is directly rotatably connected with the front wheel support, and a rear portion of the seat rod is rotatably connected with the support rod; the locking mechanism is provided on the second rotating joint and capable of locking the upper push rod and the lower push rod to each other; when the frame is in the unfolded state, the front wheel support and the rear wheel support support each other, the upper push rod and the lower push rod extend towards the direction facing away from the front wheels, the locking mechanism locks the upper push and the lower push rod to each other, the support rod stands aslant between the lower push rod and the rear wheel support, and the seat rod is unfolded between the front wheel support and the support rod; when the frame is in the folded state, the locking mechanism is unlocked, the front wheel support, the rear wheel support, the upper push rod, the lower push rod, the support rod and the seat rod all get close to each other and folded together. 2. The baby stroller according to claim 1, wherein, a torsional spring is provided where the upper push rod and the lower push rod intersect to form the second rotating joint, and when the locking mechanism is unlocked, the upper push rod is driven by the torsional spring to roll forwards around the second rotating joint. 3. The baby stroller according to claim 1, wherein, the stroller further comprises an unlocking mechanism comprising a pulling cable and an unlocking belt, the pulling cable being provided inside the frame, an upper end of the pulling cable extending outside the frame and being connected with the locking mechanism, a lower end of the pulling cable extending outside the frame and being connected with the unlocking belt, the unlocking belt being located between the rear wheel supports on each side, and pulling the unlocking belt is able to unlock the locking mechanism via the pulling cable. 4. The baby stroller according to claim 1, wherein, an upper end portion of the front wheel support and an upper end portion of the rear wheel support intersect to form the first rotating joint, and the rotatable connection joint formed by the seat rod and the front wheel support is below the first rotating joint. 5. The baby stroller according to claim 1, wherein, the upper push rod is formed by fixedly intersecting an upper rod and a lower rod, the second rotating joint formed by the lower push rod and the upper push rod is located where the upper rod and the lower rod intersect, and the support rod and a lower portion of the lower rod are rotatably connected. 6. The baby stroller according to claim 5, wherein, when the frame is in the unfolded state, the rotatable connection joint formed by the support rod and the lower rod is below the second rotating joint, and the rotatable connection joint formed by the support rod and the rear wheel support is below the connection joint formed by the support rod and the seat rod. 7. The baby stroller according to claim 6, wherein, the rear wheel support, the lower push rod, the lower rod and the support rod form a four-link mechanism. 8. The baby stroller according to claim 7, wherein, when the frame is in the unfolded state, the lower push rod and the upper rod are substantially in the same line, and the lower rod and the support rod are substantially in the same line.