Collapsible trolley

A collapsible trolley, comprising a push rod, a holder, a central rod, a connecting rod, and two wheel rods;

• the push rod having an upper end provided with a handle and a lower end formed with a first through hole, a second through hole, and a third through hole in sequence, the first through holes being adapted for connection of the holder, the second through holes being adapted for connection of the connecting rod, the third through holes being adapted for connection of the central rod, the lower end of the push rod being inserted in a movable sleeve, the movable sleeve having a through hole and a recess facing downward;
• the holder having a distal end provided with a first pivot seat which is pivotally connected with the first through hole of the push rod;
• the central rod comprising an upper end which is movably inserted in the recess of the movable sleeve, a bulge on an inner side of the upper end, a second pivot seat near the upper end, two third pivot seats at a lower section thereof, and a wheel at a lower end thereof, the push rod abutting upon the central rod with the movable sleeve, the bulge being located between the push rod and the central rod, the second pivot seat being pivotally connected with the third through hole, the two third pivot seats being pivotally connected with the two wheel rods, respectively;
• the connecting rod being a bent rod inserted through the second through hole of the push rod and having two ends connected to the two wheel rods;
• the two wheel rods each having an upper end pivoted to one of the third pivot seats, a middle section connected with the connecting rod, and a lower end coupled with a wheel.