Patent ID: 7219920

Claim:
An easily detached and assembled golf cart with an auxiliary wheel comprising: a frame having two parallel tubes; each tube having an upper end, a lower end, and a mid-frame pivot installed between the upper end and the lower end; a first wheel rotatably fixed to a first wheel supporter; a second wheel rotatably fixed to a second wheel supporter; an auxiliary wheel; a connecting unit having a first retainer, a second retainer connecting to the first retainer and a wheel retainer; one end of the wheel retainer being pivotally connected to the auxiliary wheel; another end of the wheel retainer being connected to the second retainer; the first retainer having at least one buckling groove; an insertion unit; the first retainer being fixed to an insertion unit of the lower end of the frame; the insertion unit having two receiving ends at an upper ends for receiving the two tubes of the frame; a hook unit axially installed to the insertion unit; the hook unit having a plate; the plate having a tenon capable of being inserted into the buckling groove of the first retainer of the connecting unit; and wherein the first retainer is inserted into the frame of a lower hole of the insertion unit with the buckling groove of the first retainer is aligned to a lateral hole of the insertion unit; the tenon of the plate passes through the lateral hole of the insertion unit and the buckling groove of the first retainer and then is buckled into the buckling groove for assembling the connecting unit to the insertion unit; and wherein the plate of the hook unit is installed with at least one spring for restoring the hook unit to an original position, wherein the spring and the tenon are installed at two opposite sides of the plate.