Patent ID: 8783431

Claim:
A fast detachable side wheel device, comprising: a first wheel cover, provided with an installation part and a first receiving groove; a second wheel cover, disposed in said first receiving groove, and is provided with a positioning part and a second receiving groove; a wheel body, disposed in said second receiving groove; and a movable component, disposed in said installation part, and includes a positioning element, such that said movable component controls said positioning element to position and fix correspondingly to said positioning part, or to detach positioning of said positioning element and said positioning part; wherein said installation part includes a first installation groove, a second installation groove, and a first retaining part, said second installation groove is in connection with said first receiving groove and is vertical to said first installation groove, and said first retaining part is located over said first installation groove; and wherein said movable component includes a press piece and a connection rod, said connection rod serves as said position element, said press piece is installed in said first receiving groove, said connection rod is installed in said second installation groove, and said connection rod is provided with a first hole and an extension part, said first hole corresponds to a guiding block of said press piece, said extension part is provided for at least a first restoring spring to sleeve on and said first restoring spring is pressed against said first retaining part.