Abstract: A vehicle differential gear includes a power unit, a differential gear, two wheels and a brake. The power unit has a transmission wheel extending outward. The differential gear has one outer side threadably assembled with a driven wheel connected with the transmission wheel by a belt. The two wheels respectively have a transmission shaft connected with the bevel gear unit of the differential gear and driven to rotate by the differential gear. The brake is assembled with the differential gear to control the differential gear and brake a car. Thus, a proper driven wheel can be chosen for use according to preset running speeds of a car and then it is threadably assembled on one outer side of the differential gear, needless to make molds for various components to suit different running speeds of a car.

Abstract: A golf bag cart in the invention includes a main wheel frame having a motor and a connecting base; a front wheel frame assembled in front of the main wheel frame; a main rod pivoted with the connecting base; a slide sleeve fitted around the main rod and capable of being sleeved on the connecting base; a support bracket pivotally mounted on the main rod for supporting a golf bag and capable of being folded; a telescopic rod inserted into the main rod and capable of being pulled outwardly or withdrawn into the main rod; and, a grip handle disposed at an upper end of the telescopic rod and having an ON/OFF button and a speed-adjustment knob connected with the motor via power-supply cords, whereby the golf bag cart is constructed, prompt in assembling, easy and labor-saving in operation, simple in collapsing, and utility and convenient in use.

Abstract: A height-adjusting device for a handle and a seat of an electric scooter in the invention includes a handle tube and a seat tube respectively extended from a front frame and a rear frame of an electric scooter and both having at least one projection and engagement holes; a handle stem and a seat post both having at least one groove respectively corresponding to the projections of the handle tube and the seat tube, and at least one resilient stopper respectively engaged in the engagement holes of the handle tube and the seat tube. Only to press the resilient stoppers to move the handle stem or the seat post to a required height, and make the resilient stoppers engaged in the engagement holes, thus easily and conveniently adjusting and fixing a handle or a seat at a required position for people of different height to ride the electric scooter comfortably.

Abstract: An electric vehicle handle collapsing device for an electric vehicle includes a fundamental base, a fitting fork tube, a combining member, an operating member, a subordinate rod, a pull spring and a locking device. After the locking device is released and the pull plate of the operating member is pulled upward, the subordinate rod is forced to move upward and disengaged from the front engage notches and then moved in the rear engage notches of the fundamental base by a pulling force of the pull spring. Thus, the handle of an electric vehicle can be collapsed to diminish the dimensions of the electric vehicle, letting the electric vehicle carried about conveniently.

Abstract: A shock-absorbing device for a rear wheel of an electric scooter has two shock absorbers assembled between the rear wheel frame and the rear frame plate of an electric scooter. Each shock absorber has an adjusting ring threadably fitted on a tube which is assembled with the rear frame plate by a bolt inserted through the insert hole of the tube and a gasket and screwed with the fixing threaded rod, with a compression spring fitted around the tube. A protective ring and a washer are fitted around a lower rod, which is inserted in the tube, letting the opposite ends of the compression spring respectively pushing against the adjusting ring and the washer. A bolt inserted through the insert hole of the lower rod and the fixing hole of the rear wheel frame is screwed with a bolt-receiving member to combine the lower rod with the rear wheel frame.