A pedal powered motor-assist golf bag cart/cycle (10) is a personal riding golf cart/cycle adapted to transport a rider and a golf bag (12) for use on a golf course. The cart/cycle (10) is generally symmetrical about a longitudinal plane (11) and includes a frame (14) with a seat (16), a front wheel and steering components (18), a rear wheel (20), an inclined bag support (22), a pedal subassembly (24), a motor assist subassembly (26), and controls (28). It is adapted to be propelled by either the pedal subassembly (24), the motor subassembly (26), or both together.

A central shaft torque sensing system for an electric bicycle having a centre-mounted motor. The system comprises a central shaft, a centre-mounted motor and a controller, and also comprises a torque sensor and a strain sleeve. The controller is respectively connected to the torque sensor and the centre-mounted motor, and the motor comprises a main housing, a coil stator, a rotor, a motor output gear shaft, a planetary reduction mechanism and a dual-ratchet clutch, one end of the strain sleeve being connected to the dual-ratchet clutch, the other end being sleeved on the central shaft and fixedly connected thereto, the torque sensor being mounted on the sleeve. The motor output gear shaft is sleeved on the central shaft and forms an integrated structure with the rotor of the motor, the coil stator is fixed on the main housing, the rotor is wrapped on the outside of the coil stator and fixedly connected to the motor output gear shaft, the planetary reduction mechanism is arranged within the main housing, and the gear shaft engages with the planetary reduction mechanism via a gear. The present motor driving system provides corresponding assistance according to the specific requirements of a rider.

A central shaft torque sensing system for an electric bicycle having a centre-mounted motor. The system comprises a central shaft, a centre-mounted motor and a controller, and also comprises a torque sensor and a strain sleeve. The controller is respectively connected to the torque sensor and the centre-mounted motor, and the motor comprises a main housing, a coil stator, a rotor, a motor output gear shaft, a planetary reduction mechanism and a dual-ratchet clutch, one end of the strain sleeve being connected to the dual-ratchet clutch, the other end being sleeved on the central shaft and fixedly connected thereto, the torque sensor being mounted on the sleeve. The motor output gear shaft is sleeved on the central shaft and forms an integrated structure with the rotor of the motor, the coil stator is fixed on the main housing, the rotor is wrapped on the outside of the coil stator and fixedly connected to the motor output gear shaft, the planetary reduction mechanism is arranged within the main housing, and the gear shaft engages with the planetary reduction mechanism via a gear. The present motor driving system provides corresponding assistance according to the specific requirements of a rider.

The present invention relates to a motorized hub assembly for a bicycle wheel. The assembly has a hub shaft extending along a longitudinal axis with a cavity to receive a quick release axle. A bearing having a radially inner ring is arranged radially outside the hub shaft. A hub body is rotatably mounted on the hub shaft about the longitudinal axis and an electric motor is arranged inside the hub body. A routing opening for passage of electrical conductors for the electric motor pass through a routing opening arranged radially between the inner ring of the bearing and the hub shaft.

The present invention relates to a motorized hub assembly for a bicycle wheel. The assembly has a hub shaft extending along a longitudinal axis with a cavity to receive a quick release axle. A bearing having a radially inner ring is arranged radially outside the hub shaft. A hub body is rotatably mounted on the hub shaft about the longitudinal axis and an electric motor is arranged inside the hub body. A routing opening for passage of electrical conductors for the electric motor pass through a routing opening arranged radially between the inner ring of the bearing and the hub shaft.

By detecting a temperature abnormality of a power semiconductor by using the power semiconductor as a temperature sensor, it is possible to detect deterioration and an abnormality of elements, a drive circuit and a cooling system, prevent a failure during an operation by taking an appropriate measure in advance, and make a system operational life long. More specifically, a power converting device which includes the power semiconductor and an arithmetic operation circuit which gives a drive instruction to the power semiconductor detects the temperature abnormality of the power semiconductor based on the drive instruction of the power semiconductor and a delay time of a control drive voltage applied to the power semiconductor to protect the power converting device. The power converting device which includes the power semiconductor and the arithmetic operation circuit gives the drive instruction compares and determines a delay time of the drive instruction and a control voltage applied to the power semiconductor and a reference value, and changes at least one of the drive instruction and the drive voltage based on a result of the comparison and the determination.

By detecting a temperature abnormality of a power semiconductor by using the power semiconductor as a temperature sensor, it is possible to detect deterioration and an abnormality of elements, a drive circuit and a cooling system, prevent a failure during an operation by taking an appropriate measure in advance, and make a system operational life long. More specifically, a power converting device which includes the power semiconductor and an arithmetic operation circuit which gives a drive instruction to the power semiconductor detects the temperature abnormality of the power semiconductor based on the drive instruction of the power semiconductor and a delay time of a control drive voltage applied to the power semiconductor to protect the power converting device. The power converting device which includes the power semiconductor and the arithmetic operation circuit gives the drive instruction compares and determines a delay time of the drive instruction and a control voltage applied to the power semiconductor and a reference value, and changes at least one of the drive instruction and the drive voltage based on a result of the comparison and the determination.

An intelligent exercise bike includes a frame, and a front wheel and a rear motor wheel, wherein the frame is provided with a pedal motor electrically connected with the pedal, and the output shaft of the pedal motor is drivingly connected with the pedal; the pedal motor has a torque sensor and a Hall sensor that are electrically connected thereto for detecting the speed and force of the pedal; a bike controller is provided in the frame, and the torque sensor and the Hall sensor convert the detected pedal speed and force into transmission signals, and output them to the bike controller; the bike controller is connected to a power supply circuit of the rear motor wheel, and the bike controller outputs a control signal to adjust the output power value of the rear motor wheel after receiving the transmission signals.

A bicycle with removable battery for supplying power to electric components, comprising a frame composed of an upper tube connected with a front oblique tube and with a rear vertical tube, which in turn are connected in a lower region so as to form a seat for a bottom bracket and with which a pair of horizontal rear chainstays and a pair of oblique rear chainstays are coupled. The front oblique tube has an axial seat for a removable battery and for accommodating connection and/or electric power supply cables. The axial seat has an axis that passes above the bottom bracket and a lower end that is open and located at the interspace between the pair of horizontal rear chainstays.