| 摘要 |
<p>A step tread regulating mechanism of a baby stroller comprises a front bracket(1), step tread assemblies(2), and seat cushion rods(3), wherein two joints(5) on the upper ends of the step tread assemblies(2) are connected with the front parts of connecting seats(4) on both sides of the front bracket(1) through first pins (6); the front ends of the seat cushion rods(3), regulating pieces(8) and torsion springs(9) are connected with the rear parts of the connecting seats(4) through second pins(7); each regulating piece(8) is provided with a button(10) and a locking rod(11); the lower part of each joint(5) is provided with a first positioning groove(51), a second positioning groove(52) and an arc-shaped section(53) positioned between the first positioning groove(51) and the second positioning groove(52); the front end of the arc-shaped section(3) is smoothly connected with the groove bottom(51a) of the first positioning groove(51); the rear end is connected with the front edge of the groove opening(52a) of the second positioning groove(52); the locking rod(11) is matched with the first positioning groove(51), the second positioning groove(52) and the arc-shaped section(53) in a sliding way; When the locking rod(11) is clamped in the first positioning groove(51), the step tread assemblies(2) are in a sitting state; and when the locking rod(11) is clamped in the second positioning groove(52), the step tread assemblies(2) are in a lying state. Therefore, by using the step tread regulating mechanism of the baby stroller, a baby can sit or lie on the seat cushion comfortably.</p> |
