A wheel reversing mechanism, a cart frame, and an apparatus are provided. The wheel reversing mechanism includes a frame, a wheel assembly and a linkage assembly provided within the frame. The linkage assembly includes a locking mechanism and an actuator cooperated with the wheel assembly. The wheel assembly includes a wheel joint and a wheel connected to the wheel joint. The wheel joint is rotatably connected to a lower end of the frame, the actuator is connected to the wheel joint. The locking mechanism is locked to the wheel joint. The linkage assembly is acted by an external force, such that the locking mechanism is unlocked from the wheel joint, and further, the actuator controls the wheel joint to rotate relative to the frame.

A wheel reversing mechanism, a cart frame, and an apparatus are provided. The wheel reversing mechanism includes a frame, a wheel assembly and a linkage assembly provided within the frame. The linkage assembly includes a locking mechanism and an actuator cooperated with the wheel assembly. The wheel assembly includes a wheel joint and a wheel connected to the wheel joint. The wheel joint is rotatably connected to a lower end of the frame, the actuator is connected to the wheel joint. The locking mechanism is locked to the wheel joint. The linkage assembly is acted by an external force, such that the locking mechanism is unlocked from the wheel joint, and further, the actuator controls the wheel joint to rotate relative to the frame.

A damping device is arranged on a first pipe (101) and a second pipe (102) of a seat pipe (100) of the stroller, which are parallel to each other, and carries a seat part of the stroller. The damping device comprises a bracket structure (10, 20) pivotally connected to the first pipe and the second pipe. The bracket structure is arranged to elastically prevent the bracket structure from pivoting relative to the first pipe and the second pipe by means of a damping elastic element to delay a downward movement of the seat part. The damping device of the stroller enables the stroller to achieve better damping effect.

A stroller system including a rear suspension system comprising two springs is discussed. The stroller system is configured to withstand a variety of operating conditions including various terrain, speed and weight requirements. An embodiment of a stroller with a dual elastic suspension system is also discussed.