Abstract: To realize a unit sales system of an electromotive power assisted bicycle that provides a broad range of flexibility in conformity with requirements of a user, a server computer 1-1 for distributing an electromotive power assisted bicycle according to the present invention comprises a control section 1-2 for providing a general control and management of the computer, a hard disk 1-3 for storing a set of a variety of information for providing the electromotive power assisted bicycle, and a modem 1-4 enabling the connection to a variety of different terminals via a communication network. The hard disk 1-3 stores bicycle information, electromotive power assisting information, user information, physical strength/health information, a variety of different control programs to be downloaded, information about a supplier to which an order is issued, and information about an assembly station and so on.

Abstract: An electromotive power assisted bicycle includes a drive shaft rotated by a pedal effort a primary sprocket fixed to the drive shaft for transmitting the pedal effort to a drive wheel; a secondary sprocket fixed to the drive shaft coaxially with the primary sprocket; a pedal effort detection sensor; an electromotive power output unit box detachably attached to the body for outputting electromotive power in response to the detected pedal effort; a power sprocket coupled to a rotating output shaft of the electromotive power output unit box; an auxiliary chain stretched between the secondary sprocket and the power sprocket; a supporting section for rotatably supporting the drive shaft; and a unit mounting bracket on which the electromotive power output unit box is mounted, the unit mounting bracket being fixed to the supporting section with the drive shaft penetrating through the unit mounting bracket.

Abstract: To provide an electromotive power assisted bicycle enabling an aerobic exercise with a light weight and simple mechanism, an electromotive power assisted bicycle 1 comprises a pedal effort detection means for detecting a pedal effort (99, 126), a drive unit 13, a force combining mechanism for transmitting a rotational torque of a speed reducing unit to a drive shaft, and a heart rate detection sensor 254. The drive unit 13 comprises an electric motor 37 and a speed reducing unit 35 having an electromagnetic clutch 250. In a mode enabling the aerobic exercise, if the detected pedal effort is higher than the pedal effort level enabling the aerobic exercise, the drive unit 13 drives the electric motor 37 under the condition of the electromagnetic clutch 250 being engaged and thus assists the pedal effort with the electric force.

Abstract: To realize a unit sales system of an electromotive power assisted bicycle that provides a broad range of flexibility in conformity with requirements of a user, a server computer 1-1 for distributing an electromotive power assisted bicycle according to the present invention comprises a control section 1-2 for providing a general control and management of the computer, a hard disk 1-3 for storing a set of a variety of information for providing the electromotive power assisted bicycle, and a modem 1-4 enabling the connection to a variety of different terminals via a communication network. The hard disk 1-3 stores bicycle information, electromotive power assisting information, user information, physical strength/health information, a variety of different control programs to be downloaded, information about a supplier to which an order is issued, and information about an assembly station and so on.

Abstract: To provide an electromotive power assisted bicycle enabling an aerobic exercise with a light weight and simple mechanism, an electromotive power assisted bicycle 1 comprises a pedal effort detection means for detecting a pedal effort (99, 126), a drive unit 13, a force combining mechanism for transmitting a rotational torque of a speed reducing unit to a drive shaft, and a heart rate detection sensor 254. The drive unit 13 comprises an electric motor 37 and a speed reducing unit 35 having an electromagnetic clutch 250. In a mode enabling the aerobic exercise, if the detected pedal effort is higher than the pedal effort level enabling the aerobic exercise, the drive unit 13 drives the electric motor 37 under the condition of the electromagnetic clutch 250 being engaged and thus assists the pedal effort with the electric force.

Abstract: An electromotive power assisted bicycle comprises a drive shaft 4 to be rotated by a pedal effort; a primary sprocket 2 fixed to the drive shaft 4 for transmitting the pedal effort to a drive wheel 22; a secondary sprocket fixed to the drive shaft 4 coaxially with the primary sprocket 2; a pedal effort detection sensor for detecting a pedal effort; an electromotive power output unit box 13 detachably attached to the body for outputting an electromotive power in response to the pedal effort detected by the pedal effort detection sensor; a power sprocket coupled to a rotating output shaft of the electromotive power output unit box 13; an auxiliary chain stretched across between the secondary sprocket and the power sprocket; and a battery bracket 165 capable of accommodating a battery 162 for the electromotive power output unit box 13.