Stroller and stroller frame

A stroller, comprising a stroller frame, an infant seat (7), wherein the stroller frame comprises front tubes (20) and rear tubes (21), and the stroller frame further comprises:

• a frame (1), defining an accommodation space (14) to accommodate the front tubes (20) and the rear tubes (21);
• and
• sliders (23), movably connected to the front tubes (20) and the rear tubes (21), and configured to drive the front tubes (20) and the rear tubes (21) to move into the accommodation space (14);
• wherein the stroller frame has an unfolded state and a folded state;
• when the front tubes (20) and the rear tubes (21) extend out of the accommodation space (14), the stroller frame is in the unfolded state and is maintained in a stable configuration;
• when the front tubes (20) and the rear tubes (21) are retracted into the accommodation space (14), the stroller frame is in the folded state and is maintained in a stable configuration;
• wherein the frame (1) further comprises a locking mechanism (4) configured to lock each of the sliders (23) to the frame (1) when the stroller frame is in the folded state, the locking mechanism (4) comprises an unlocking post (40) rotatably connected to a top end of the frame (1), a reverse wedge-shaped locking tab (42) extends outward from a side of the unlocking post (40), a positive wedge-shaped locking tab (41) extends vertically outward from a surface of each of the sliders (23) facing towards an inside of the frame (1), and the positive wedge-shaped locking tab (41) is engaged with the reverse wedge-shaped locking tab (42);
• and
• wherein the infant seat (7) is fixed to a front side of the stroller frame.

A stroller frame, comprising front tubes (20) and rear tubes (21), wherein the stroller frame further comprises:

• a frame (1), defining an accommodation space (14) to accommodate the front tubes (20) and the rear tubes (21), wherein the frame (1) is provided with slide rails (12) therein, and the slide rails (12) are disposed in the accommodation space (14);
• and
• sliders (23), movably connected to the front tubes (20) and the rear tubes (21), and configured to drive the front tubes (20) and the rear tubes (21) to move into the accommodation space (14), wherein each of the slide rails (12) cooperates with a corresponding one of the sliders (23) to allow the slider (23) to slide longitudinally;
• wherein the stroller frame has an unfolded state and a folded state;
• when the front tubes (20) and the rear tubes (21) extend out of the accommodation space (14), the stroller frame is in the unfolded state and is maintained in a stable configuration;
• when the front tubes (20) and the rear tubes (21) are retracted into the accommodation space (14), the stroller frame is in the folded state and is maintained in a stable configuration;
• and
• wherein rotating mechanisms (26) are respectively disposed at ends of the front tubes (20) and rear tubes (21) facing away from the frame (1), wheels (25) of the stroller frame are caster wheels, and the caster wheels are fixed to the rotating mechanisms (26) respectively;
• the ends of the front tubes (20) and the rear tubes (21) connected to the rotating mechanisms (26) are referred to as connecting ends (200);
• and each of the rotating mechanisms (26) comprises:
• a rotating arm (264), connected between a corresponding one of the wheels (25) and a corresponding one of the front tubes (20) and the rear tubes (21);
• a connecting rod (260), fixedly connected to an end of the rotating arm (264) facing towards a corresponding one of the connection ends (200);
• a fixed member (263), wherein the connecting rod (260) is vertically and slidably connected to the fixed member (263), and the fixed member (263) is fixed to an inner wall of the corresponding one of the connecting ends (200);
• a limiting plate (262), integrally connected to an end of the connecting rod (260) facing away from the rotating arm (264), wherein the limiting plate (262) is perpendicular to the connecting rod (260);
• and
• a spring (261), disposed between the limiting plate (262) and the fixed member (263), wherein the spring (261) is in a compressed state;
• and
• wherein the wheel (25) is fixed to other end of the rotating arm (264), the fixed member (263) is fixed to a side wall of the corresponding one of the front tubes (20) and the rear tubes (21), there are at least two engagement angles between the rotating arm and the connecting end (200), and one of the at least two engagement angles is configured to retract the wheel (25) into the frame (1).