Drive assistance device for a wheel chair and a wheel chair having a drive assistance device

摘要

A drive assistance device for a wheel chair is disclosed. The device comprises: a drive motor, a driving wheel, a sensor means which is adapted to detect a drive force manually induced into the driving wheel, and a control unit which is adapted to control the drive motor for driving a driving wheel in accordance with a drive assistance degree depending on the drive force manually induced into the driving wheel. The control unit comprises an anti-rollback operational mode so that an unintended rolling of the driving wheel is avoided.