Input and output operation device

An input and output operation device, comprising:

• (i) an actuator including:
• an operation unit having an operation surface;
• a movable unit having the operation unit and at least one attraction magnet mounted thereon and including a concaved portion in a part thereof;
• a secured unit including at least one magnetic member and a convexed spherical surface loosely engageable with the concaved portion of the movable unit, the convexed spherical surface being in point-contact or line-contact with the concaved portion of the movable unit by a magnetic attraction force between the at least one attraction magnet and the at least one magnetic member, the secured unit supporting the movable unit such that the movable unit is freely rotatable as centered around a spherical center of the convexed spherical surface;
• a first driving unit rotating the operation unit, with respect to the secured unit, as centered around an X-axis passing the spherical center;
• a second driving unit rotating the operation unit, with respect to the secured unit, as centered around a Y-axis perpendicular to the X-axis on a plane including the X-axis;
• and
• a detector detecting a first rotation angle of the operation unit, with respect to the secured unit, around the X-axis and a second rotation angle of the operation unit, with respect to the secured unit, around the Y-axis;
• wherein the spherical center of the convexed spherical surface is provided at an origin of the X-axis and the Y-axis;
• and
• (ii) a detection circuit unit generating first and second rotation angle signals from the first and second rotation angles.