Abstract: A foldable bicycle has a frame, a front fork, a front wheel, a stem, a handlebar, a handlebar positioning device, a seat post, a seat, a rear fork, a rear wheel, a drive assembly, a shock absorber and a rear fork positioning device. The handlebar positioning device is mounted between the front fork and the stem so the stem can be folded toward the frame. The rear fork positioning device is mounted between the shock absorber and the rear fork so the rear fork can be folded toward the frame. Accordingly, the bicycle can be folded to reduce the space for storing or transporting the bicycle, and the structure of a foldable bicycle with a shock absorber is simplified.

Abstract: A foldable bicycle has a frame, a front fork, a front wheel, a stem, a handlebar, a handlebar positioning device, a seat post, a seat, a rear fork, a rear wheel, a drive assembly, a shock absorber and a rear fork positioning device. The handlebar positioning device is mounted between the front fork and the stem so the stem can be folded toward the frame. The rear fork positioning device is mounted between the shock absorber and the rear fork so the rear fork can be folded toward the frame. Accordingly, the bicycle can be folded to reduce the space for storing or transporting the bicycle, and the structure of a foldable bicycle with a shock absorber is simplified.

Abstract: A tricycle comprises an upright handlebar, a front wheel frame, two expandable footboard support rods, and two braking devices. The front wheel frame is fastened with the bottom end of the upright handlebar and is provided with an elongated hole for locating a front wheel axle. The two expandable footboard support rods are jointly fastened with the upright handlebar by a lashing member. The braking devices comprise a rotary support rod, and a braking rod which is fastened at one end with a brake cable and is provided at other end with a braking portion capable of being forced against a rear wheel at the time when the braking rod is activated by the brake cable.