Abstract: A swinging device for a wheel set includes a center tube, an axle pipe and a restrictor. The center tube has round plates at the rear section. The round plates comprise lugs thereon. The axle pipe has a curved receiving base with a pair of fins extending from respective sides of the receiving base. The fins comprise through holes for insertion of bolts. The restrictor is pivotally connected to the rear section of the center tube and comprises ditches corresponding in position to the round plates of the center tube, so that the lugs of the round plates may be placed therein and slide along the ditches. The restrictor further comprises through holes corresponding in position to the through holes of the receiving base and the bolts. An elastic piece made of plastic material is placed between the rear section of the center tube and the axle pipe.

Abstract: A swing structure for a wheel set includes a central tube, an axial tube, a spacer, a sleeve, and a fastener. The central tube is provided with a ring plate at the rear end. The ring plate is formed with a through hole thereon. A connection cylinder is disposed at the middle section of the axial tube. The connection cylinder has one end provided with a ring plate. The ring plate of the connection cylinder has a through hole for the sleeve to insert through. The spacer has a through hole for the sleeve to insert through. The sleeve is hollow for the fastener to insert through. The fastener inserts through the sleeve and is secured in the through hole of the ring plate of the central tube.

Abstract: A turning device for a wheel set includes a handle strut and an axle pipe. The handle strut comprises a connecting tube at the bottom. The connecting tube comprises swirl tubes at respective ends. Each swirl tube has restricting members. The axle pipe comprises a receiving base corresponding to the connecting tube. The receiving base comprises lids at respective sides. The lids comprise restricting members corresponding to the restricting members of the swirl tubes. The lids and the receiving base comprise through holes for insertion of fasteners to secure the lids to the receiving base. By means of the restricting members, the receiving base and the swirl tubes may be turned with respect to each other to a limited angle. The restricting members are lugs and troughs.

Abstract: A tricycle crank structure comprises a wheel axle, a pair of cranks and a pair of pedals. The wheel axle is provided with a pair of non-circular sectional holes at respective ends. The inner wall of each hole is provided with a recess. Each crank has one end pivotally connected to the pedal and another end provided with a connecting section. The connecting section is provided with a tenon to engage with the recess of the hole for quick mounting and dismounting. Each hole may be provided with a pair of through holes, and each crank is provided with an elastic clip for connection.

Abstract: A steering knuckle structure is incorporated with an upright pipe and a shaft wherein the upright pipe is able to twist. The steering knuckle structure comprises a fastener, a sleeve and a pair of lids. A connector is provided at the bottom of the upright pipe. The sleeve has its two ends covered by the lids. The shaft is pivotally connected to the lids. The sleeve comprises a connecting seat transversely secured at the center portion thereon. The connecting seat comprises a pair of protruding plates at respective ends. Each protruding plate has a hole at the center. The connector is placed in the connecting seat between the two protruding plates. The two holes of the protruding plates are aligned with the connector, and the fastener is inserted into the holes to secure the upright pipe to the sleeve.

Abstract: A steering knuckle structure includes a front strut, a connecting device, and a sleeve. The front strut has a connecting pipe at the bottom. The connecting device comprises an upper section and a corresponding lower section. Both the upper section and the lower section comprise extending edges with holes thereon. The upper section further comprises a slot for the front strut to insert there through. The lower section is transversely secured on the middle portion of the sleeve for the connecting pipe of the front strut to seat thereon. The upper section and the lower section are secured together to wrap the connecting pipe therein, which enables the front strut to swing relative to the sleeve.

Abstract: A wheel having an accelerating charger includes a wheel body, a generator unit, an accelerating gear set, and a shaft. The generator unit and the accelerating gear set are coupled in the wheel body by a shaft. The generator unit includes a magnet and a coil. The accelerating gear set has a solar gear, a pair of planetary gears, a gear plate, and a driven gear. The solar gear and the coil are first coupled to the wheel body in such an arrangement that they spin in the same direction with the wheel body whereas the planetary gears are linked by the solar gear to rotate and the driven gear is also linked to rotate in an opposite direction. The magnet coupled on the driven gear rotates with the driven gear at the same time.

Abstract: A scooter includes a skateboard, a front fork, and fastened members. The skateboard has a fixture member at front bottom with a pair of tubes at respective sides. The front fork has a fixture with a pair of rods on respective sides. The rods of the fixture of the front fork are secured to the tubes of the fixture member of the skateboard by means of the fastened members.

Abstract: A wheel having an accelerating electricity charging device includes a wheel, an accelerating gear set, a shaft sleeve, a generator, and a shaft. The wheel comprises an inner gear. The accelerating gear set comprises a pair of driving gears, a driven gear and a fixing plate. The driving gears mesh with the driven gear and are secured on the fixing plate. The shaft sleeve is inserted through the driven gear. The generator comprises a magnet and a coil. The magnet of the generator is secured to one end of the shaft sleeve with the shaft inserting through the shaft sleeve and the magnet inserted through the coil. The shaft is provided with engaging surfaces engaged with the hole of the fixing plate.

Abstract: A structure restraining movement of a handle of a children's cycle comprises a handle, a frame, a cover and a block. The handle has a bolt and a nut. The frame comprises a strut at the front end. Both the cover and block comprise a hole at their center portion thereof, whereas the cover is secured to the handle and the block is secured to the strut of the frame. By inserting the bolt through the holes of the cover and the block, the handle and the frame are pivoted and secured together with the nut from the other end. This secures the handle to the frame of the cycle and allows the handle to turn with respect to the frame. Whereas a stud protruding from the cover seats in an arc slot of the block, which restrains the stud to go any further when it has reached to the two ends of the arc slot, this also restrains the handle to turn to a certain position.

Abstract: A vehicle electrical generator comprises a magnetic ring on one side of a wheel, and an inductive coil on a shaft of the wheel corresponding to the magnetic ring, thus when rolling the wheel, the magnetic ring rotating with the wheel within the inductive coil, this rotation produces electricity, which then transferred by a pair of negative and positive wires to the load.