ELECTRIC PROPULSION UNIT AND TORQUE TRANSMISSION GROUP FOR AN ELECTRIC SCOOTER AND CORRESPONDING SCOOTER
First Claim
1. An electric propulsion unit and torque transmission group for operating the rear wheel of an electric scooter with a body of the step-through type and with upright sitting portion, said electric propulsion unit comprising at least one synchronous electric motor, wherein said synchronous electric motor is of the type comprising internal stator and external rotor with a cup-shaped form rotating on a fixed shaft rigidly connected to the stator, the motor being designed to be installed in a barycentric position with respect to the scooter substantially at the base of the upright sitting portion with the fixed shaft transverse to the longitudinal axis of the scooter, and said transmission group comprising at least one first and one second reduction stage.
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Accused Products
Abstract
The invention relates to an electric propulsion unit (10) and torque transmission group (11) for operating the rear wheel (13) of an electric scooter (1) with body (2) of the step-through type and with upright sitting portion (6). The electric propulsion unit (10) comprises at least one synchronous electric motor (30) of the type comprising internal stator (32) and external rotor (29) with a cup-shaped form rotating on a fixed shaft (33) rigid with the stator (32); the motor is installed in a barycentric position substantially at the base of the upright sitting portion (6) with the fixed shaft (33) transverse to the longitudinal axis (X-X) of the scooter (2), and the transmission group (11) comprises at least one first and one second reduction stage (24, 26).
29 Citations
12 Claims
- 1. An electric propulsion unit and torque transmission group for operating the rear wheel of an electric scooter with a body of the step-through type and with upright sitting portion, said electric propulsion unit comprising at least one synchronous electric motor, wherein said synchronous electric motor is of the type comprising internal stator and external rotor with a cup-shaped form rotating on a fixed shaft rigidly connected to the stator, the motor being designed to be installed in a barycentric position with respect to the scooter substantially at the base of the upright sitting portion with the fixed shaft transverse to the longitudinal axis of the scooter, and said transmission group comprising at least one first and one second reduction stage.
Specification