Reaction force output device

A reaction force output device that outputs a reaction force to an operation unit, comprising:

• a motor as a drive source configured to create the reaction force;
• a reaction force transmission unit configured to transmit the reaction force to the operation unit;
• a clutch mechanism disposed between the motor and the reaction force transmission unit and configured to set the motor and the reaction force transmission unit to a disengaged state or an engaged state depending on a driving state of the motor;
• and
• a planetary gear mechanism disposed between the motor and the reaction force transmission unit,
• wherein the planetary gear mechanism includes
• a sun gear to which a torque from the motor side is input,
• a ring gear disposed coaxially with the sun gear,
• a planetary gear configured to engage with the sun gear and the ring gear, and
• a carrier configured to support the planetary gear to rotate and revolve and to output the reaction force to the reaction force transmission unit side,
• the clutch mechanism includes
• a protrusion configured to protrude from the ring gear, and
• a stopper configured to come in contact with the protrusion, and
• the protrusion comes in contact with the stopper to regulate rotation of the ring gear at the time of rotation of the motor and the protrusion is separated from the stopper to allow rotation of the ring gear at the time of stopping of the rotation of the motor.

A reaction force output device that outputs a reaction force to an operation unit, comprising:

• a motor as a drive source configured to create the reaction force;
• a reaction force transmission unit configured to transmit the reaction force to the operation unit;
• a clutch mechanism disposed between the motor and the reaction force transmission unit and configured to set the motor and the reaction force transmission unit to a disengaged state or an engaged state depending on a driving state of the motor;
• and
• a bias spring configured to bias the reaction force transmission unit in a direction following a return operation of the operation unit,
• wherein the clutch mechanism includes
• a first rotary member connected to a rotation shaft side of the motor in a path in which a driving force is transmitted from the motor to the reaction force transmission unit,
• a second rotary member disposed coaxially with the first rotary member to relatively rotate and connected to the reaction force transmission unit side in the path,
• a holder block configured to rotate in the same direction as the first rotary member with a rotational force received from the first rotary member when the first rotary member is rotated by the motor,
• a clutch claw held to rotate by the holder block,
• a clutch engagement portion disposed in the second rotary member to engage with the clutch claw, and
• a clutch spring configured to bias the clutch claw to a rotational position at which the clutch claw engages with the clutch engagement portion,
• the clutch claw rotates between a clutch engaged position at which the clutch claw engages with the clutch engagement portion to transmit rotation of the holder block to the second rotary member and a clutch disengaged position at which the clutch claw is disengaged from the clutch engagement portion, and
• the clutch claw is pressed in a clutch disengaging direction by the clutch engagement portion when the second rotary member rotates in a biasing direction of the bias spring prior to the holder block.