Manipulation device

A rotation-type manipulation device, comprising:

• a manipulation member including a manipulation body having a rotational axis that allows a rotational operation of the manipulation body according to a manipulation by a manipulator;
• a support body that rotatably supports the manipulation body;
• and
• a rotational load mechanism that applies a rotational load to the manipulation body, the rotational load mechanism including:
• a movable member that rotates by being engaged with the rotational axis of the manipulation member;
• a magnetism generating mechanism that faces the movable member a gap provided therebetween, the magnetism generating mechanism including:
• a coil that generates a magnetic field by being energized;
• a first yoke provided on one side of the movable member so as to enclose the coil, the first yoke having a first opposing part and a second opposing part formed on a side thereof facing the movable member, the first opposing part and the second opposing part being separated from each other by a first slit;
• and
• a magnetic viscous fluid provided in the gap, the magnetic viscous fluid filling a first portion of the gap between the first opposing part and the movable member and a second portion of the gap between the second opposing part and the movable member, viscosity of the magnetic viscous fluid changing according to strength of the magnetic field.