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Application filed by Prosys Technology Integration IncfiledCriticalProsys Technology Integration Inc
Priority to TW94107809ApriorityCriticalpatent/TWI252790B/en
Application grantedgrantedCritical
Publication of TWI252790BpublicationCriticalpatent/TWI252790B/en
Publication of TW200631725ApublicationCriticalpatent/TW200631725A/en
A rotation device includes a rotation shaft, a connection bar part and a guiding part. The connection bar part is connected to the rotation shaft. The guiding part is able to provide a first effecting force applied on the connection bar part to make the connection bar part drive the rotation shaft to rotate toward a first direction, and a second effecting force applied on the connection bar part to make the connection bar part drive the rotation shaft to rotate toward a second direction. With the device of the present invention, it is able to reduce the power apparatus provided on the rotation shaft, for example, the use of motor, so as to decrease the expense of cost and simplify the mechanism design, thereby making the product more competitive in the market.
External-rotor electric motor with or without a planetary gear mechanism, motor vehicle with an external-rotor electric motor and a method for operating such a vehicle