Patent ID: 11945519
Assignee: HITACHI ASTEMO, LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A reaction force generating device for a steering device, the reaction force generating device comprising:
a steering shaft connected to a steering member on which a steering operation is to be performed by a driver;
a direct drive motor connected to the steering shaft and configured to generate reaction torque; and
an electromagnetic brake configured to generate friction torque and including a first friction portion configured to integrally rotate with the steering shaft, a second friction portion provided to face the first friction portion and to be non-rotatable, and an electromagnetic unit configured to press the second friction portion against the first friction portion,
wherein the reaction force generating device is configured to
generate reaction torque by the direct drive motor when a steering angle of the steering member is within a predetermined range, and
generate reaction torque by combining the reaction torque generated by the direct drive motor and the friction torque generated by the electromagnetic brake when a steering angle of the steering member exceeds the predetermined range.