Abstract: A tricycle comprises a front tube, a handlebar frame, a front fork, a front wheel, two footboard frames, and a swiveling member. The handlebar frame is received in the front tube. The front fork is disposed at the bottom end of the handlebar frame for fastening the front wheel. The two footboard frames are pivoted with the front tube and are formed of a bottom tube, a footboard, and a rear wheel. The bottom tube is provided with a through hole to accommodate a buffer member such that the buffer member is pivoted with the rear end of the front tube. The swiveling member is provided in two sides with two insertion pillars which are connected with the buffer member.

Abstract: A foldable tricycle comprises two footboards which are formed of a front tube and a rear tube. A folding mechanism is disposed between the front tube and the rear tube and is formed of a pivoting plate extending from the rear end of the front tube, a pivoting seat extending from the front end of the rear tube, and at least one locating member disposed on the pivoting seat. The pivoting plate is pivoted with the pivoting seat such that they are detachably located by the locating member at two opposite positions, thereby enabling the tricycle to be folded.

Abstract: A device is designed to secure the front tube of the handlebar of a foldable scooter and is formed of a shaft rod, two clamping members, a wrenching rod, a lashing collar, and a stop nut. The device is pivotally fastened between the front tube of the handlebar and the folding mechanism of the foldable scooter. The clamping members are actuated by the wrenching rod to hold and push a press member of the shaft rod to press against the front tube, so as to prevent the handlebar of the scooter from swaying at the time when the scooter is in motion.

Abstract: A fast dismantling device comprises two C-shaped fitting rings, two shaft bolts, two pivots, two dial rods, and a connection rod. The fitting rings are provided with a through hole and are fitted over an outer tube. The shaft bolts include a head and a shank which is received in the through hole of the fitting rings. The pivots are disposed at the free ends of the shanks of the shaft bolts. The dial rods comprise a cam portion which is formed of two actuation pieces. The shaft bolts are disposed between the two actuation pieces. The actuation pieces are provided with a through hole for receiving the pivot. The connection rod is connected at both ends thereof with the dial rods. As the connection rod is wrenched to actuate the dial rods, the fast dismantling device is capable of fastening or unfastening simultaneously two pairs of inner and outer tubes.

Abstract: A tricycle comprises a front tube, a handlebar frame, a front fork, a front wheel, two footboards, and a swiveling member. The handlebar frame is put through the front tube. The front fork is fastened with the bottom end of the handlebar frame for fastening the front wheel. The two footboards are pivoted with the front tube and are formed of a bottom tube, a step board, and a rear wheel. The swiveling member is pivoted with the front tube and is provided at the top end the bottom end with a cross rod. The two cross rods are arranged at an interval between the two bottom tubes.

Abstract: A rod bending mechanism is disposed between a first segment and a second segment of the rod and is formed of a pivoting plate extending from one end of the first segment, a pivoting seat having two side plates extending from one end of the second segment, and at least one locating member disposed on one of the two side plates. The pivoting plate is pivoted with the pivoting seat such that the pivoting plate and the pivoting seat are located by the locating member.

Abstract: A device is designed to press the transmission belt of an electric cart and is formed of a pivot set, a first swiveling member, a second swiveling member, a first wheel set, a second wheel set, and an elastic element. The first and the second swiveling members are pivoted with the pivot set such that they are located at two sides of the transmission belt. The first and the second wheel sets are provided with one or more rollers which are pivoted to the first and the second swiveling members. The rollers come in contact with the transmission belt to enhance the transmission effect of the transmission belt. The elastic element provides the first and the second swiveling members with a spring force enabling them to swivel toward the transmission belt.