Abstract: An adjustable handle assembly for a personal mobility vehicle includes a mounting bracket, an adjusting device including a primary and secondary pivot post pivotally on the mounting bracket and a mechanical lock interconnecting the two pivot posts. The mechanical lock includes a stationary bracket mounted on the primary pivot post, a bushing bracket pivotally mounted in the stationary bracket, a connecting tube, locking wedges and a sliding block. The connecting tube is attached to the bushing bracket, is hollow for slidably receiving the secondary pivot post and has multiple wedge holes that respectively movably hold locking wedges. The sliding block is slidably mounted on the connecting tube and has a bottom annular bevel that presses the locking wedges to clamp the secondary pivot post in place when the sliding block is forced to a locked position.

Abstract: A cart has a folding support for handlebars, which includes a lower rod secured on a front part of a frame, a pivotal rod pivoted to an upper end of the lower rod, and an upper tube positioned in a linearly displaceable manner around the pivotal rod from a lower end; the pivotal rod has a lengthways extending slot; the upper tube has two opposing holes; handlebars of the cart are connected to an upper end of the upper tube; a connecting element is passed through the opposing holes and the slot such that the upper tube will prevent the pivotal rod from moving relative to the lower rod when it is around the pivotal rod and the lower rod, and such that the support can be folded with the pivotal rod pivoting on the lower rod when the upper tube is apart from the lower rod.

Abstract: A device of a cart includes a control, a speed regulating potentiometer, a microprocessor, a digital-to-analogue converter, a motor controlling unit, and a switch; the control is angularly displaceable and near to handlebars of the cart; the potentiometer is connected to the control so as to output a voltage, which depends on displacement of the control; the microprocessor can produce digital signals according to the output voltage of the potentiometer; the converter is used for converting the digital signals into analogue voltage; the motor controlling unit is used for making a motor run at a variable-speed mode, at which mode the speed of the motor will depend on output voltage of the converter; immediately after the rider presses the switch, the microprocessor will ignore output voltage of the potentiometer, and start and continue giving a same digital signal to the converter so that the motor starts running at constant speed.

Abstract: A frame of an electric cart includes a front part, and a rear part separable from the front part; the front part has a locating member secured on a rear end thereof; the rear part has a connecting member secured on a front end thereof for engaging the locating member, which connecting member has a spring-loaded engaging pin passed through it; the pin is made such as to be capable of engaging the locating member automatically while the rear part is being moved so as to fit the connecting member onto the locating member, thus securely joining the rear part to the front part; the engaging pin will be disengaged from the fitting portion when it is pressed at a first end, thus allowing the rear part to be separated from the front part.

Abstract: A turning mechanism of an electric cart includes twin front wheels, a control shaft, and an axle; the shaft has a horizontal rod portion at a lower end; the front wheels are connected to two ends of the axle while the axle is arranged under the horizontal rod portion; the front wheels are much closer to each other than rear wheels are to each other; springs are located between the axle and the horizontal rod portion; connecting plates are arranged next to fronts and rears of the horizontal rod portion and the axle, and each has two fitting holes respectively opposing a through hole of the horizontal rod portion, and a through hole of the axle; ringed pads are inserted in respective fitting holes, and bolts are inserted through the ringed pads, and the through holes; thus, the cart is like a three-wheel one in terms of easiness to use and simplicity of the structure.

Abstract: An electrical connector assembly is adapted for interconnecting first and second conductors provided respectively on first and second vehicle components that are coupled removably to each other, and includes first and second electrical connectors. The first electrical connector includes a first insulator seat to be mounted on the first vehicle component, and a plurality of first contacts mounted on the first insulator seat and to be coupled electrically and respectively to the first conductors. The second electrical connector includes a second insulator seat to be mounted on the second vehicle component, and a plurality of second contacts mounted pivotally on the second insulator seat and to be coupled electrically and respectively to the second conductors. The second contacts are biased such that, when the first and second vehicle components are coupled together, the second contacts are able to establish tight electrical contact with the first contacts, respectively.

Abstract: An adjustable handle assembly for a personal mobility vehicle includes a mounting bracket, an adjusting device including a primary and secondary pivot post pivotally on the mounting bracket and a mechanical lock interconnecting the two pivot posts. The mechanical lock includes a stationary bracket mounted on the primary pivot post, a bushing bracket pivotally mounted in the stationary bracket, a connecting tube, locking wedges and a sliding block. The connecting tube is attached to the bushing bracket, is hollow for slidably receiving the secondary pivot post and has multiple wedge holes that respectively movably hold locking wedges. The sliding block is slidably mounted on the connecting tube and has a bottom annular bevel that presses the locking wedges to clamp the secondary pivot post in place when the sliding block is forced to a locked position.

Abstract: A direction and speed control device includes a casing, a sensing unit, and a magnet assembly. The sensing unit includes a magnetic sensor. The magnet assembly includes a pivot axle that is mounted rotatably on the casing and that has a magnet carrying portion extending into the casing, and a driven portion extending from the magnet carrying portion and disposed outwardly of the casing, and further includes first and second magnets mounted on the magnet carrying portion and disposed on opposite sides of the magnetic sensor. The driven portion is operable to rotate the pivot axle relative to the casing so as to displace the first and second magnets relative to the magnetic sensor. The sensing unit generates a control output for controlling direction and speed of a motor vehicle in accordance with the displacement of the first and second magnets relative to the magnetic sensor.

Abstract: An electric wheelchair includes a frame, and a seat; the frame has front and rear support rods projecting upwards from it, locating parts secured to the front support rods, and fitting parts secured to the rear support rods; each locating part has opposing guide trenches; each fitting part has lateral portions formed with opposing holes; the seat has engaging elements, and fitting elements secured to the lower side; each engaging element has a slide rod; each fitting element has opposing holes on lateral portions thereof; thus, the seat can be secured to the frame by means of passing pins through the holes of the fitting parts and the fitting elements after the slide rods are passed into the guide trenches, and after the holes of the fitting elements are aligned with the holes of the fitting parts.